Caterpillar Fault Codes List | Caterpillar Engines Troubleshooting (2024)

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Table 1 Table 2 Table 3 Post navigation Leave a Reply

Diagnostic codes alert the operator that a problem in the electronic system has been detected. Diagnostic codes are also used by the service technician to identify the nature of the problem. The technician must have access to a diagnostic tool to read diagnostic information.

The following Module Identifiers (MID) are used to identify the control modules that are associated
with engine operation:

• MID No. 036 is used to identify the engine Electronic Control Module (ECM)
• MID No. 094 is used to identify the Temperature Control Module (TCM)

Tables 1 and table 2 lists the diagnostic codes that apply to the engine ECM.
Table 3 lists the diagnostic codes that apply to the TCM for the engine cooling system.

Use Caterpillar Electronic Technician (ET) to determine the diagnostic codes that are active or
logged. Then refer to the appropriate troubleshooting procedure for more information.
Note: Do not confuse diagnostic codes with event codes. Event codes alert the operator that an
abnormal operating condition such as low oil pressure or high coolant temperature has been detected.
If an event code is active, refer to Troubleshooting, “Event Codes”.

Diagnostic information is transmitted over data links. This engine uses the following two types of data
links for communication. The data links are described below:

Cross-Reference from CID-FMI Code to SPN-FMI Code to the Appropriate Circuit Test
MID No. 036

Table 1

Diagnostic Code and DescriptionSPN-FMI Code and DescriptionTroubleshooting Procedure
1-2 Cylinder #1 Injector : Erratic, Intermittent, or Incorrect651-2 Engine Injector Cylinder #01 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
Troubleshooting, “Injector Solenoid – Test”
1-5 Cylinder #1 Injector : Current Below Normal651-5 Engine Injector Cylinder #01 : Current Below Normal
1-6 Cylinder #1 Injector : Current Above Normal651-6 Engine Injector Cylinder #01 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
1-7 Cylinder #1 Injector : Not Responding Properly651-7 Engine Injector Cylinder #01 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
2-2 Cylinder #2 Injector : Erratic, Intermittent, or Incorrect652-2 Engine Injector Cylinder #02 : Erratic, Intermittent, or IncTroubleshooting, “Injector Solenoid – Test”
2-5 Cylinder #2 Injector : Current Below Normal652-5 Engine Injector Cylinder #02 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
2-6 Cylinder #2 Injector : Current Above Normal652-6 Engine Injector Cylinder #02 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
2-7 Cylinder #2 Injector : Not Responding Properly652-7 Engine Injector Cylinder #02 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
3-2 Cylinder #3 Injector : Erratic, Intermittent, or Incorrect653-2 Engine Injector Cylinder #03 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
3-5 Cylinder #3 Injector : Current Below Normal653-5 Engine Injector Cylinder #03 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
3-6 Cylinder #3 Injector : Current Above Normal653-6 Engine Injector Cylinder #03 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
3-7 Cylinder #3 Injector : Not Responding Properly653-7 Engine Injector Cylinder #03 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
4-2 Cylinder #4 Injector : Erratic,654-2 Engine Injector Cylinder #04 : Erratic,Troubleshooting, “Injector Solenoid – Test”
Intermittent, or IncorrectIntermittent, or Incorrect
4-5 Cylinder #4 Injector : Current Below Normal654-5 Engine Injector Cylinder #04 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
4-6 Cylinder #4 Injector : Current Above Normal654-6 Engine Injector Cylinder #04 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
4-7 Cylinder #4 Injector : Not Responding Properly654-7 Engine Injector Cylinder #04 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
5-2 Cylinder #5 Injector : Erratic, Intermittent, or Incorrect655-2 Engine Injector Cylinder #05 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
5-5 Cylinder #5 Injector : Current Below Normal655-5 Engine Injector Cylinder #05 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
5-6 Cylinder #5 Injector : Current Above Normal655-6 Engine Injector Cylinder #05 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
5-7 Cylinder #5 Injector : Not Responding Properly655-7 Engine Injector Cylinder #05 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
6-2 Cylinder #6 Injector : Erratic, Intermittent, or Incorrect656-2 Engine Injector Cylinder #06 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
6-5 Cylinder #6 Injector : Current Below Normal656-5 Engine Injector Cylinder #06 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
6-6 Cylinder #6 Injector : Current Above Normal656-6 Engine Injector Cylinder #06 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
6-7 Cylinder #6 Injector : Not Responding Properly656-7 Engine Injector Cylinder #06 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
7-2 Cylinder #7 Injector : Erratic, Intermittent, or Incorrect657-2 Engine Injector Cylinder #07 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
7-5 Cylinder #7 Injector : Current Below Normal657-5 Engine Injector Cylinder #07 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
7-6 Cylinder #7 Injector : Current Above Normal657-6 Engine Injector Cylinder #07 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
7-7 Cylinder #7 Injector : Not Responding Properly657-7 Engine Injector Cylinder #07 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
8-2 Cylinder #8 Injector : Erratic, Intermittent, or Incorrect658-2 Engine Injector Cylinder #08 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
8-5 Cylinder #8 Injector : Current Below Normal658-5 Engine Injector Cylinder #08 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
8-6 Cylinder #8 Injector : Current Above Normal658-6 Engine Injector Cylinder #08 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
8-7 Cylinder #8 Injector : Not Responding Properly658-7 Engine Injector Cylinder #08 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
9-2 Cylinder #9 Injector : Erratic, Intermittent, or Incorrect659-2 Engine Injector Cylinder #09 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
9-5 Cylinder #9 Injector : Current Below Normal659-5 Engine Injector Cylinder #09 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
9-6 Cylinder #9 Injector : Current Above Normal659-6 Engine Injector Cylinder #09 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
9-7 Cylinder #9 Injector : Not659-7 Engine Injector Cylinder #09 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
Responding Properly
10-2 Cylinder #10 Injector : Erratic, Intermittent, or Incorrect660-2 Engine Injector Cylinder #10 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
10-5 Cylinder #10 Injector : Current Below Normal660-5 Engine Injector Cylinder #10 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
10-6 Cylinder #10 Injector : Current Above Normal660-6 Engine Injector Cylinder #10 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
10-7 Cylinder #10 Injector : Not Responding Properly660-7 Engine Injector Cylinder #10 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
11-2 Cylinder #11 Injector : Erratic, Intermittent, or Incorrect661-2 Engine Injector Cylinder #11 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
11-5 Cylinder #11 Injector : Current Below Normal661-5 Engine Injector Cylinder #11 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
11-6 Cylinder #11 Injector : Current Above Normal661-6 Engine Injector Cylinder #11 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
11-7 Cylinder #11 Injector : Not Responding Properly661-7 Engine Injector Cylinder #11 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
12-2 Cylinder #12 Injector : Erratic, Intermittent, or Incorrect662-2 Engine Injector Cylinder #12 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
12-5 Cylinder #12 Injector : Current Below Normal662-5 Engine Injector Cylinder #12 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
12-6 Cylinder #12 Injector : Current Above Normal662-6 Engine Injector Cylinder #12 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
12-7 Cylinder #12 Injector : Not Responding Properly662-7 Engine Injector Cylinder #12 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
13-2 Cylinder #13 Injector : Erratic, Intermittent, or Incorrect663-2 Engine Injector Cylinder #13 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
13-5 Cylinder #13 Injector : Current Below Normal663-5 Engine Injector Cylinder #13 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
13-6 Cylinder #13 Injector : Current Above Normal663-6 Engine Injector Cylinder #13 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
13-7 Cylinder #13 Injector : Not Responding Properly663-7 Engine Injector Cylinder #13 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
14-2 Cylinder #14 Injector : Erratic, Intermittent, or Incorrect664-2 Engine Injector Cylinder #14 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
14-5 Cylinder #14 Injector : Current Below Normal664-5 Engine Injector Cylinder #14 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
14-6 Cylinder #14 Injector : Current Above Normal664-6 Engine Injector Cylinder #14 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
14-7 Cylinder #14 Injector : Not Responding Properly664-7 Engine Injector Cylinder #14 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
15-2 Cylinder #15 Injector : Erratic, Intermittent, or Incorrect665-2 Engine Injector Cylinder #15 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
15-5 Cylinder #15 Injector : Current Below Normal665-5 Engine Injector Cylinder #15 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
Troubleshooting, “Injector Solenoid – Test”
15-6 Cylinder #15 Injector : Current Above Normal665-6 Engine Injector Cylinder #15 : Current Above Normal
15-7 Cylinder #15 Injector : Not Responding Properly665-7 Engine Injector Cylinder #15 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
16-2 Cylinder #16 Injector : Erratic, Intermittent, or Incorrect666-2 Engine Injector Cylinder #16 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
16-5 Cylinder #16 Injector : Current Below Normal666-5 Engine Injector Cylinder #16 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
16-6 Cylinder #16 Injector : Current Above Normal666-6 Engine Injector Cylinder #16 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
16-7 Cylinder #16 Injector : Not Responding Properly666-7 Engine Injector Cylinder #16 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
2493–2 Cylinder #17 Injector : Erratic, Intermittent, or Incorrect667-2 Engine Injector Cylinder #17 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
2493–5 Cylinder #17 Injector : Current Below Normal667-5 Engine Injector Cylinder #17 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
2493–6 Cylinder #17 Injector : Current Above Normal667-6 Engine Injector Cylinder #17 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
2493-7 Cylinder #17 Injector : Not Responding Properly667-7 Engine Injector Cylinder #17 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
2494-2 Cylinder #18 Injector : Erratic, Intermittent, or Incorrect668-2 Engine Injector Cylinder #18 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
Troubleshooting, “Injector Solenoid – Test”
2494-5 Cylinder #18 Injector : Current Below Normal668-5 Engine Injector Cylinder #18 : Current Below Normal
2494-6 Cylinder #18 Injector : Current Above Normal668-6 Engine Injector Cylinder #18 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
2494-7 Cylinder #18 Injector : Not Responding Properly668-7 Engine Injector Cylinder #18 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
2495-2 Cylinder #19 Injector : Erratic, Intermittent, or Incorrect669-2 Engine Injector Cylinder #19 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
2495-5 Cylinder #19 Injector : Current Below Normal669-5 Engine Injector Cylinder #19 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
2495-6 Cylinder #19 Injector : Current Above Normal669-6 Engine Injector Cylinder #19 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
2495-7 Cylinder #19 Injector : Not Responding Properly669-7 Engine Injector Cylinder #19 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
2496-2 Cylinder #20 Injector : Erratic, Intermittent, or Incorrect670-2 Engine Injector Cylinder #20 : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
2496-5 Cylinder #20 Injector : Current Below Normal670-5 Engine Injector Cylinder #20 : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
2496-6 Cylinder #20 Injector : Current Above Normal670-6 Engine Injector Cylinder #20 : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
2496-7 Cylinder #20 Injector : Not Responding Properly670-7 Engine Injector Cylinder #20 : Not Responding ProperlyTroubleshooting, “Fuel Systems Verification – Test”
18-7 Fuel Control Valve : Not1076-7 Engine Fuel Injection Pump FuelThe actual position and the desired position of the fuel actuator is not within specifications. Replace the fuel control valve.
Responding ProperlyControl Valve : Not Responding Properly
18-8 Fuel Control 1076-8 Engine Fuel Valve : Abnormal Injection Pump Fuel
Frequency, Pulse Control Valve : Troubleshooting, “Fuel Control – Test”
Width, or Period Abnormal Frequency,
Pulse Width, or Period
18-9 Fuel Control 1076-9 Engine Fuel
Valve : Abnormal Injection Pump Fuel Troubleshooting, “Fuel Control – Test” Update Rate Control Valve :
Abnormal Update Rate
18-11 Fuel Control 1076-11 Engine Fuel Valve : Other Failure Injection Pump Fuel
Mode Control Valve : Other During a self-test, the fuel control valve has
Failure Mode detected an internal fault. Replace the fuel
18-12 Fuel Control 1076-12 Engine Fuel control valve. Valve : Failure Injection Pump Fuel
Control Valve : Failure
41-3 8 Volt DC
Supply : Voltage Above Normal		678-3 ECU 8 Volts DC
Supply : Voltage Above Normal		Troubleshooting, “Sensor Supply – Test”
41-4 8 Volt DC
Supply : Voltage Below Normal		678-4 ECU 8 Volts DC
Supply : Voltage Below Normal		Troubleshooting, “Sensor Supply – Test”
91-8 Throttle Position Sensor : Abnormal Frequency, Pulse Width, or Period91-8 Accelerator Pedal Position 1 : Abnormal Frequency, Pulse Width, or PeriodTroubleshooting, “Speed Control – Test”
95-2 Fuel Filter Differential Pressure Sensor : Erratic, Intermittent, or Incorrect95-2 Engine Fuel Filter Differential Pressure : Erratic, Intermittent, or IncorrectThe filtered fuel pressure is greater than the unfiltered fuel pressure. Ensure that the sensor connectors are connected to the correct sensors. If an electrical problem with a sensor is suspected, refer to Troubleshooting, “Sensor Signal (Analog, Active) – Test” for information that is related to troubleshooting an electrical problem with the fuel pressure sensors.
99-2 Engine Oil Filter Differential Pressure Sensor : Erratic, Intermittent, or Incorrect99-2 Engine Oil Filter Differential Pressure : Erratic, Intermittent, or IncorrectThe filtered oil pressure is greater than the unfiltered oil pressure. Ensure that the sensor connectors are connected to the correct sensors. If an electrical problem with a sensor is suspected, refer to Troubleshooting, “Sensor Signal (Analog, Active) – Test” for information
that is related to troubleshooting an electrical problem with the oil pressure sensors.
100-3 Engine Oil Pressure Sensor : Voltage Above Normal100-3 Engine Oil Pressure : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
100-4 Engine Oil Pressure Sensor : Voltage Below Normal100-4 Engine Oil Pressure : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
100-10 Engine Oil Pressure Sensor abnormal rate of change100-10 Engine Oil Pressure : Abnormal Rate of ChangeTroubleshooting, “Sensor Supply – Test”
101-3 Crankcase Air Pressure Sensor : Voltage Above Normal101-3 Engine Crankcase Pressure : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
101-4 Crankcase Air Pressure Sensor : Voltage Below Normal101-4 Engine Crankcase Pressure : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
110-3 Engine Coolant Temperature Sensor : Voltage Above Normal110-3 Engine Coolant Temperature : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
110-4 Engine Coolant Temperature Sensor : Voltage Below Normal110-4 Engine Coolant Temperature : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
168-0 Electrical System Voltage : High168-0 Battery Potential / Power Input 1 : High – most severe (3)Troubleshooting, “Electrical Power Supply – Test”
168-1 Electrical System Voltage : Low168-1 Battery Potential / Power Input 1 : Low – most severe (3)Troubleshooting, “Electrical Power Supply – Test”
168-2 Electrical System Voltage : Erratic, Intermittent, or Incorrect168-2 Battery Potential / Power Input 1 : Erratic, Intermittent, or IncorrectTroubleshooting, “Electrical Power Supply – Test”
172-3 Intake Manifold Air Temperature Sensor : Voltage Above Normal105-3 Engine Intake
Manifold 1 Temperature : Voltage Above Normal		Troubleshooting, “Sensor Signal (Analog, Passive) – Test”
172-4 Intake Manifold Air Temperature Sensor : Voltage Below Normal105-4 Engine Intake
Manifold 1 Temperature : Voltage Below Normal		Troubleshooting, “Sensor Signal (Analog, Passive) – Test”
174-3 Fuel Temperature Sensor : Voltage Above Normal174-3 Engine Fuel Temperature 1 : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
174-4 Fuel Temperature Sensor : Voltage Below Normal174-4 Engine Fuel Temperature 1 : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
175-3 Engine Oil Temperature Sensor : Voltage Above Normal175-3 Engine Oil Temperature 1 : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
175-4 Engine Oil Temperature Sensor : Voltage Below Normal175-4 Engine Oil Temperature 1 : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
190-8 Engine Speed Sensor : Abnormal Frequency, Pulse Width, or Period190-8 Engine Speed : Abnormal Frequency, Pulse Width, or PeriodTroubleshooting, “Speed/Timing – Test”
247-9 SAE J1939
Data Link : Abnormal Update Rate		639-9 J1939 Network #1 : Abnormal Update RateTroubleshooting, “Data Link – Test”
253-2 Personality Module : Erratic, Intermittent, or Incorrect234-2 Software Identification : Erratic, Intermittent, or IncorrectTroubleshooting, “Configuration Parameters”
262-3 5 Volt Sensor DC Power Supply : Voltage Above Normal620-3 5 Volts DC Supply : Voltage Above NormalTroubleshooting, “Sensor Supply – Test”
262-4 5 Volt Sensor DC Power Supply : Voltage Below Normal620-4 5 Volts DC Supply : Voltage Below NormalTroubleshooting, “Sensor Supply – Test”
268-2 Programmed Parameter Fault : Erratic, Intermittent, or Incorrect1111-2 Engine Protection System Configuration : Erratic, Intermittent, or IncorrectTroubleshooting, “Configuration Parameters”
274-3 Atmospheric Pressure Sensor : Voltage Above Normal108-3 Barometric Pressure : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
274-4 Atmospheric Pressure Sensor : Voltage Below Normal108-4 Turbocharger Outlet Pressure Sensor voltage above normalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
279-3 Aftercooler Coolant Temperature Sensor (Front) : Voltage Above Normal52-3 Engine Intercooler Temperature : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
279-4 Aftercooler Coolant Temperature Sensor (Front) : Voltage Below Normal52-4 Engine Intercooler Temperature : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
289-3 Fuel Pressure Sensor – Before Fuel Filter : Voltage Above Normal94-3 Engine Fuel Delivery Pressure : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
289-4 Fuel Pressure Sensor – Before Fuel Filter : Voltage Below Normal94-4 Engine Fuel Delivery Pressure : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
336-2 Engine Control Switch : Erratic, Intermittent, or Incorrect1656-2 Engine Automatic Start Enable Switch : Erratic, Intermittent, or IncorrectTroubleshooting, “Data Link – Test”
337-2 Remote Emergency Stop Switch : Erratic,970-0 Engine Auxiliary Engine ShutdownTroubleshooting, “Shutdown – Test”
Intermittent, or IncorrectSwitch : High – most severe (3)
338-5 Engine Pre- Lube Pump Relay : Current Below Normal3551-5 Engine Oil Priming State : Current Below NormalTroubleshooting, “Prelubrication – Test”
338-6 Engine Pre- Lube Pump Relay : Current Above Normal3551-6 Engine Oil Priming State : Current Above NormalTroubleshooting, “Prelubrication – Test”
342-8 Secondary Engine Speed Sensor : Abnormal Frequency, Pulse Width, or Period723-8 Engine Speed Sensor #2 : Abnormal Frequency, Pulse Width, or PeriodTroubleshooting, “Speed/Timing – Test”
342-11 Secondary Engine Speed Sensor : Other Failure Mode723-11 Engine Speed Sensor #2 : Other Failure ModeTroubleshooting, “Speed/Timing – Test”
446-5 Air Shutdown Relay : Current Below Normal2813-5 Engine Air Shutoff Command Status : Current Below NormalTroubleshooting, “Shutdown – Test”
446-6 Air Shutoff Relay short2813-6 Engine Air Shutoff Command Status : Current Above NormalTroubleshooting, “Shutdown – Test”
460-3 Fuel Pressure Sensor – After Fuel Filter : Voltage Above Normal94-3 Engine Fuel Delivery Pressure : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
460-4 Fuel Pressure Sensor – After Fuel Filter : Voltage Below Normal94-4 Engine Fuel Delivery Pressure : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
460-14 Fuel Pressure Sensor – After Fuel Filter : Special Instruction94-14 Engine Fuel Delivery Pressure : Special InstructionThe filtered fuel pressure is greater than the unfiltered fuel pressure. Ensure that the sensor connectors are connected to the correct sensors. If an electrical problem with a sensor is suspected, refer to Troubleshooting, “Sensor Signal (Analog, Active) – Test”for information that is related to troubleshooting an electrical problem with the fuel pressure sensors.
542-3 Engine Oil Pressure Sensor – Before Oil Filter : Voltage Above Normal1208-3 Engine Pre-filter Oil Pressure : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
542-4 Engine Oil Pressure Sensor – Before Oil Filter : Voltage Below Normal1208-4 Engine Pre-filter Oil Pressure : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
542-10 Engine Oil Pressure Sensor – Before Oil Filter : Abnormal Rate of Change1208-10 Engine Percent Torque At Point 4 : Abnormal Rate of ChangeTroubleshooting, “Sensor Supply – Test”
1028-6 Power Supply Control 1 : Current Above Normal3597-6 ECU Power
Output Voltage : Current Above Normal		Troubleshooting, “Fuel Control – Test”
1491-3 Right Turbo Turbine Inlet Temperature Sensor : Voltage Above Normal1181-3 Engine
Turbocharger 2 Turbine Inlet Temperature : Voltage Above Normal		Troubleshooting, “Sensor Signal (PWM) – Test”
1491-4 Right Turbo Turbine Inlet Temperature Sensor : Voltage Below Normal1181-4 Engine
Turbocharger 2 Turbine Inlet Temperature : Voltage Below Normal		Troubleshooting, “Sensor Signal (PWM) – Test”
1491-8 Right Turbo Turbine Inlet Temperature Sensor : Abnormal Frequency, Pulse Width, or Period1181-8 Engine
Turbocharger 2 Turbine Inlet Temperature : Abnormal Frequency, Pulse Width, or Period		Troubleshooting, “Sensor Signal (PWM) – Test”
1492-3 Left Turbo Turbine Inlet Temperature Sensor : Voltage Above Normal1180-3 Engine
Turbocharger 1 Turbine Inlet Temperature : Voltage Above Normal		Troubleshooting, “Sensor Signal (PWM) – Test”
1492-4 Left Turbo Turbine Inlet Temperature Sensor :1180-4 Engine
Turbocharger 1 Turbine		Troubleshooting, “Sensor Signal (PWM) – Test”
Voltage Below NormalInlet Temperature : Voltage Below Normal
1492-8 Left Turbo Turbine Inlet Temperature Sensor : Abnormal Frequency, Pulse Width, or Period1180-8 Engine
Turbocharger 1 Turbine Inlet Temperature : Abnormal Frequency, Pulse Width, or Period		Troubleshooting, “Sensor Signal (PWM) – Test”
1627-5 Fuel Pump Relay : Current Below Normal1627-5 Fuel Pump Relay : Current Below NormalTroubleshooting, “Fuel Priming Pump – Test”
1627-6 Fuel Pump Relay : Current Above Normal1627-6 Fuel Pump Relay : Current Above NormalTroubleshooting, “Fuel Priming Pump – Test”
1690-8 Throttle #2 Position Sensor : Abnormal Frequency, Pulse Width, or Period29-8 Accelerator Pedal Position 2 : Abnormal Frequency, Pulse Width, or PeriodTroubleshooting, “Speed Control – Test”
1785-3 Intake Manifold Pressure Sensor : Voltage Above Normal102-3 Engine Intake Manifold #1 Pressure : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
1785-4 Intake Manifold Pressure Sensor : Voltage Below Normal102-4 Engine Intake Manifold #1 Pressure : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
1785-10 Intake Manifold Pressure Sensor : Abnormal Rate of Change102-10 Engine Intake Manifold #1 Pressure : Abnormal Rate of ChangeTroubleshooting, “Sensor Supply – Test”
1797-3 Fuel Rail Pressure Sensor : Voltage Above Normal157-3 Engine Injector
Metering Rail 1 Pressure : Voltage Above Normal		Troubleshooting, “Sensor Signal (Analog, Active) – Test”
1797-4 Fuel Rail Pressure Sensor : Voltage Below Normal157-4 Engine Injector
Metering Rail 1 Pressure : Voltage Below Normal		Troubleshooting, “Sensor Signal (Analog, Active) – Test”
1797-7 Fuel Rail Pressure Sensor : Not157-7 Engine Injector
Metering Rail 1		The pressure in the high-pressure fuel system is fluctuating out of specifications.
Use Cat ET to monitor the fuel pressure in the
Responding ProperlyPressure : Not Responding Properlylow-pressure fuel system and in the high- pressure fuel system. Refer to the appropriate troubleshooting procedure that is for the suspected problem.
Verify that there is no problem with the pressure sensor for the high-pressure fuel system. If a problem with the pressure sensor is suspected, refer to Troubleshooting, “Sensor Signal (Analog, Active) – Test”.
Check for diagnostic codes that are related to the fuel control valve. Repair any active codes. If the high-pressure fuel pump is suspected of mechanical damage, replace the pump.
1797-10 Fuel Rail Pressure Sensor : Abnormal Rate of Change157-10 Engine Injector
Metering Rail 1 Pressure : Abnormal Rate of Change		During the engine crank cycle, the ECM did not detect a deviation in the signal from the pressure sensor that is for the fuel rail. Refer to Troubleshooting, “Sensor Supply – Test” to troubleshoot the sensor.
1834-2 Ignition Key Switch loss of signal158-2 Keyswitch Battery Potential : Erratic, Intermittent, or
Incorrect		Troubleshooting, “Electrical Power Supply – Test”
2131-3 5 V Sensor DC Power Supply #2 : Voltage Above Normal3510-3 Sensor Supply Voltage 2 : Voltage Above NormalTroubleshooting, “Sensor Supply – Test”
2131-4 5 V Sensor DC Power Supply #2 : Voltage Below Normal3510-4 Sensor Supply Voltage 2 : Voltage Below NormalTroubleshooting, “Sensor Supply – Test”
2301-3 Aftercooler Coolant Pump Outlet Pressure Sensor : Voltage Above Normal1203-3 Engine Auxiliary Coolant Pressure : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
2301-4 Aftercooler Coolant Pump Outlet Pressure Sensor : Voltage Below Normal1203-4 Engine Auxiliary Coolant Pressure : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
2302-3 Engine Coolant Pump Outlet Pressure Sensor :20-3 Engine Extended Range Engine Coolant Pressure : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
Voltage Above Normal
2302-4 Engine Coolant Pump Outlet Pressure Sensor : Voltage Below Normal20-4 Engine Extended Range Engine Coolant Pressure : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
2303-3 Engine Block Coolant Outlet Pressure Sensor : Voltage Above Normal109-3 Engine Coolant Pressure : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
2303-4 Engine Block Coolant Outlet Pressure Sensor : Voltage Below Normal109-4 Engine Coolant Pressure : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
2323-3 Fuel Rail Temperature Sensor : Voltage Above Normal3468-3 Engine Fuel Temperature 2 : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
2323-4 Fuel Rail Temperature Sensor : Voltage Below Normal3468-4 Engine Fuel Temperature 2 : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
2348-9 SAE J1939
Data Link #2 : Abnormal Update Rate		1231-9 J1939 Network #2 : Abnormal Update RateTroubleshooting, “Data Link – Test”
2349-19 Engine Coolant Pump Outlet Temperature Sensor : Data Error4193-19 Engine Coolant Pump Outlet Temperature Sensor : Data ErrorTroubleshooting, “Coolant Temperature Control Module – Test”
2417-5 Ether Injection Control Solenoid : Current Below Normal626-5 Engine Start Enable Device 1 : Current Below NormalTroubleshooting, “Ether Starting Aid – Test”
2417-6 Ether Injection Control Solenoid : Current Above Normal626-6 Engine Start Enable Device 1 : Current Above NormalTroubleshooting, “Ether Starting Aid – Test”
2526-3 Air Inlet Temperature Sensor : Voltage Above Normal172-3 Engine Air Inlet Temperature : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
2526-4 Air Inlet Temperature Sensor : Voltage Below Normal172-4 Engine Air Inlet Temperature : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
2710-8 Engine Tertiary Speed Sensor : Abnormal Frequency, Pulse Width, or Period4202-8 Engine Speed Sensor #3 : Abnormal Frequency, Pulse Width, or PeriodTroubleshooting, “Speed/Timing – Test”
2710-11 Engine Tertiary Speed Sensor : Other Failure Mode4202-11 Engine Speed Sensor #3 : Other Failure ModeTroubleshooting, “Speed/Timing – Test”
2727-5 Starting System #1 Relay : Current Below Normal677-5 Engine Starter Motor Relay : Current Below NormalTroubleshooting, “Starting – Test”
2727-6 Starting System #1 Relay : Current Above Normal677-6 Engine Starter Motor Relay : Current Above NormalTroubleshooting, “Starting – Test”
2728-5 Starting System #2 Relay : Current Below Normal677-5 Engine Starter Motor Relay : Current Below NormalTroubleshooting, “Starting – Test”
2728-6 Starting System #2 Relay : Current Above Normal677-6 Engine Starter Motor Relay : Current Above NormalTroubleshooting, “Starting – Test”
2738-3 Turbocharger
#1 Compressor Inlet Pressure Sensor : Voltage Above Normal		1176-3 Engine
Turbocharger 1 Compressor Inlet Pressure : Voltage Above Norm		Troubleshooting, “Sensor Signal (Analog, Active) – Test”
2738-4 Turbocharger
#1 Compressor Inlet Pressure Sensor : Voltage Below Normal		1176-4 Engine
Turbocharger 1 Compressor Inlet Pressure : Voltage Below Normal		Troubleshooting, “Sensor Signal (Analog, Active) – Test”
2739-3 Turbocharger
#2 Compressor Inlet Pressure Sensor : Voltage Above Normal		1177-3 Engine
Turbocharger 2 Compressor Inlet Pressure : Voltage Above Normal		Troubleshooting, “Sensor Signal (Analog, Active) – Test”
2739-4 Turbocharger
#2 Compressor Inlet Pressure Sensor : Voltage Below Normal		1177-4 Engine
Turbocharger 2 Compressor Inlet Pressure : Voltage Below Normal		Troubleshooting, “Sensor Signal (Analog, Active) – Test”
2853-9 Engine Aftercooler Coolant Temperature Control Module : Abnormal Update Rate2853-9 Communications Connection : Abnormal Update RateTroubleshooting, “Data Link – Test”
2854-9 Coolant Temperature Control Module : Abnormal Update Rate2854-9 Communications Carrier : Abnormal Update RateTroubleshooting, “Data Link – Test”
3417-3 Fuel Filter (suction side) Intake Pressure Sensor : Voltage Above Normal5417-3 Primary Fuel Filter Inlet Pressure Sensor: Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
3417-4 Fuel Filter (suction side) Intake Pressure Sensor : Voltage Below Normal5417-4 Primary Fuel Filter Inlet Pressure Sensor: Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
3418-3 Fuel Filter (suction side) Differential Pressure Sensor : Voltage Above Normal1382-3 Engine Fuel Filter (suction side) Differential Pressure : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
3418-4 Fuel Filter (suction side) Differential Pressure Sensor : Voltage Below Normal1382-4 Engine Fuel Filter (suction side) Differential Pressure : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
3597-6 ECU Power
Output Voltage : Current Above Normal		1028-6 Power Supply Control 1 : Current Above NormalTroubleshooting, “Fuel Control – Test”

Cross-Reference from SPN-FMI Code to CID-FMI Code to the Appropriate Circuit Test MID No. 036

Table 2

SPN-FMI Code and DescriptionDiagnostic Code and DescriptionTroubleshooting Procedure
20-3 Engine Extended Range Engine Coolant Pressure : Voltage Above Normal2302-3 Engine Coolant Pump Outlet Pressure Sensor : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
20-4 Engine Extended Range Engine Coolant Pressure : Voltage Below Normal2302-4 Engine Coolant Pump Outlet Pressure Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
29-8 Accelerator Pedal Position 2 : Abnormal Frequency, Pulse Width, or Period1690-8 Throttle #2 Position Sensor : Abnormal Frequency, Pulse Width, or PeriodTroubleshooting, “Speed Control – Test”
52-3 Engine Intercooler Temperature : Voltage Above Normal279-3 Aftercooler Coolant Temperature Sensor (Front) : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
52-4 Engine Intercooler Temperature : Voltage Below Normal279-4 Aftercooler Coolant Temperature Sensor (Front) : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
91-8 Accelerator Pedal Position 1 : Abnormal Frequency, Pulse Width, or Period91-8 Throttle Position Sensor : Abnormal Frequency, Pulse Width, or PeriodTroubleshooting, “Speed Control – Test”
94-3 Engine Fuel Delivery Pressure : Voltage Above Normal289-3 Fuel Pressure Sensor – Before Fuel Filter : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
460-3 Fuel Pressure Sensor – After Fuel Filter : Voltage Above Normal
289-4 Fuel Pressure Sensor – Before Fuel Filter : Voltage
94-4 Engine Fuel Below Normal
Delivery Pressure :
Voltage Below Normal 460-4 Fuel Pressure
Sensor – After Fuel
Filter : Voltage Below Normal
94-14 Engine Fuel 460-14 Fuel Pressure The filtered fuel pressure is greater than the Delivery Pressure : Sensor – After Fuel unfiltered fuel pressure. Ensure that the sensor Special Instruction Filter : Special connectors are connected to the correct sensors.
Instruction
If an electrical problem with a sensor is
95-2 Engine Fuel Filter 95-2 Fuel Filter suspected, refer to Troubleshooting, “Sensor Differential Pressure : Differential Pressure Signal (Analog, Active) – Test” for information Erratic, Intermittent, or Sensor : Erratic, that is related to troubleshooting an electrical Incorrect Intermittent, or problem with the fuel pressure sensors.
Incorrect
99-2 Engine Oil Filter Differential Pressure : Erratic, Intermittent, or Incorrect99-2 Engine Oil Filter Differential Pressure Sensor : Erratic, Intermittent, or IncorrectThe filtered oil pressure is greater than the unfiltered oil pressure. Ensure that the sensor connectors are connected to the correct sensors. If an electrical problem with a sensor is suspected, refer to Troubleshooting, “Sensor Signal (Analog, Active) – Test” for information that is related to troubleshooting an electrical problem with the oil pressure sensors.
100-3 Engine Oil Pressure : Voltage Above Normal100-3 Engine Oil Pressure Sensor : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
100-4 Engine Oil Pressure : Voltage Below Normal100-4 Engine Oil Pressure Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
100-10 Engine Oil Pressure : Abnormal Rate of Change100-10 Engine Oil Pressure Sensor abnormal rate of changeTroubleshooting, “Sensor Supply – Test”
101-3 Crankcase Air Pressure Sensor :Troubleshooting, “Sensor Signal (Analog, Active) – Test”
101-3 Engine Crankcase Pressure : Voltage Above NormalVoltage Above Normal
101-4 Engine Crankcase Pressure : Voltage Below Normal101-4 Crankcase Air Pressure Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
102-3 Engine Intake Manifold #1 Pressure : Voltage Above Normal1785-3 Intake Manifold Pressure Sensor : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
102-4 Engine Intake Manifold #1 Pressure : Voltage Below Normal1785-4 Intake Manifold Pressure Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
102-10 Engine Intake Manifold #1 Pressure : Abnormal Rate of Change1785-10 Intake Manifold Pressure Sensor : Abnormal Rate of ChangeTroubleshooting, “Sensor Supply – Test”
105-3 Engine Intake
Manifold 1 Temperature : Voltage Above Normal		172-3 Intake Manifold Air Temperature Sensor : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
105-4 Engine Intake
Manifold 1 Temperature : Voltage Below Normal		172-4 Intake Manifold Air Temperature Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
108-3 Barometric Pressure : Voltage Above Normal274-3 Atmospheric Pressure Sensor : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
108-4 Turbocharger Outlet Pressure Sensor voltage above normal274-4 Atmospheric Pressure Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
109-3 Engine Coolant Pressure : Voltage Above Normal2303-3 Engine Block Coolant Outlet Pressure Sensor : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
109-4 Engine Coolant Pressure : Voltage Below Normal2303-4 Engine Block Coolant Outlet Pressure Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
110-3 Engine Coolant Temperature : Voltage Above Normal110-3 Engine Coolant Temperature Sensor : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
110-4 Engine Coolant Temperature : Voltage Below Normal110-4 Engine Coolant Temperature Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
157-3 Engine Injector
Metering Rail 1 Pressure : Voltage Above Normal		1797-3 Fuel Rail Pressure Sensor : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
157-4 Engine Injector
Metering Rail 1 Pressure : Voltage Below Normal		1797-4 Fuel Rail Pressure Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
157-7 Engine Injector
Metering Rail 1 Pressure : Not Responding Properly		1797-7 Fuel Rail Pressure Sensor : Not Responding
Properly		The pressure in the high-pressure fuel system is fluctuating out of specifications.
Use Cat ET to monitor the fuel pressure in the low-pressure fuel system and in the high- pressure fuel system. Refer to the appropriate troubleshooting procedure that is for the suspected problem.
Verify that there is no problem with the pressure sensor for the high-pressure fuel system. If a problem with the pressure sensor is suspected, refer to Troubleshooting, “Sensor Signal (Analog, Active) – Test”.
Check for diagnostic codes that are related to the high-pressure fuel control valve. Repair any active codes. If the high-pressure fuel pump is suspected of mechanical damage, replace the pump.
157-10 Engine Injector
Metering Rail 1 Pressure : Abnormal Rate of Change		1797-10 Fuel Rail Pressure Sensor : Abnormal Rate of ChangeDuring the engine crank cycle, the ECM did not detect a deviation in the signal from the pressure sensor that is for the fuel rail. Refer to Troubleshooting, “Sensor Supply – Test” to troubleshoot the sensor.
158-2 Keyswitch Battery Potential : Erratic, Intermittent, or
Incorrect		1834-2 Ignition Key Switch loss of signalTroubleshooting, “Electrical Power Supply – Test”
168-0 Battery Potential / Power Input 1 : High – most severe (3)168-0 Electrical System Voltage : HighTroubleshooting, “Electrical Power Supply – Test”
168-1 Battery Potential / Power Input 1 : Low – most severe (3)168-1 Electrical System Voltage : LowTroubleshooting, “Electrical Power Supply – Test”
168-2 Battery Potential / Power Input 1 : Erratic, Intermittent, or Incorrect168-2 Electrical System Voltage : Erratic, Intermittent, or IncorrectTroubleshooting, “Electrical Power Supply – Test”
172-3 Engine Air Inlet Temperature : Voltage Above Normal2526-3 Air Inlet Temperature Sensor : Voltage Above NTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
172-4 Engine Air Inlet Temperature : Voltage Below Normal2526-4 Air Inlet Temperature Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
174-3 Engine Fuel Temperature 1 : Voltage Above Normal174-3 Fuel Temperature Sensor : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
174-4 Engine Fuel Temperature 1 : Voltage Below Normal174-4 Fuel Temperature Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
175-3 Engine Oil Temperature 1 : Voltage Above Normal175-3 Engine Oil Temperature Sensor : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
175-4 Engine Oil Temperature 1 : Voltage Below Normal175-4 Engine Oil Temperature Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
190-8 Engine Speed : Abnormal Frequency, Pulse Width, or Period190-8 Engine Speed Sensor : Abnormal Frequency, Pulse Width, or PeriodTroubleshooting, “Speed/Timing – Test”
234-2 Software Identification : Erratic, Intermittent, or Incorrect253-2 Personality Module : Erratic, Intermittent, or IncorrectTroubleshooting, “Configuration Parameters”
620-3 5 Volts DC Supply : Voltage Above Normal262-3 5 V Sensor DC Power Supply : Voltage Above NormalTroubleshooting, “Sensor Supply – Test”
620-4 5 Volts DC Supply : Voltage Below Normal262-4 5 V Sensor DC Power Supply : Voltage Below NormalTroubleshooting, “Sensor Supply – Test”
626-5 Engine Start Enable Device 1 : Current Below Normal2417-5 Ether Injection Control Solenoid : Current Below NormalTroubleshooting, “Ether Starting Aid – Test”
626-6 Engine Start Enable Device 1 : Current Above Normal2417-6 Ether Injection Control Solenoid : Current Above NormalTroubleshooting, “Ether Starting Aid – Test”
639-9 J1939 Network #1 : Abnormal Update Rate247-9 SAE J1939
Data Link : Abnormal Update Rate		Troubleshooting, “Data Link – Test”
651-2 Engine Injector Cylinder #01 : Erratic, Intermittent, or Incorrect1-2 Cylinder #1 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
651-5 Engine Injector Cylinder #01 : Current Below Normal1-5 Cylinder #1 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
651-6 Engine Injector Cylinder #01 : Current Above Normal1-6 Cylinder #1 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
651-7 Engine Injector Cylinder #01 : Not Responding Properly1-7 Cylinder #1 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
652-2 Engine Injector Cylinder #02 : Erratic, Intermittent, or Inc2-2 Cylinder #2 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
652-5 Engine Injector Cylinder #02 : Current Below Normal2-5 Cylinder #2 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
652-6 Engine Injector Cylinder #02 : Current Above Normal2-6 Cylinder #2 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
652-7 Engine Injector Cylinder #02 : Not Responding Properly2-7 Cylinder #2 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
653-2 Engine Injector Cylinder #03 : Erratic, Intermittent, or Incorrect3-2 Cylinder #3 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
653-5 Engine Injector Cylinder #03 : Current Below Normal3-5 Cylinder #3 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
653-6 Engine Injector Cylinder #03 : Current Above Normal3-6 Cylinder #3 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
653-7 Engine Injector Cylinder #03 : Not Responding Properly3-7 Cylinder #3 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
654-2 Engine Injector Cylinder #04 : Erratic, Intermittent, or Incorrect4-2 Cylinder #4 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
654-5 Engine Injector Cylinder #04 : Current Below Normal4-5 Cylinder #4 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
654-6 Engine Injector Cylinder #04 : Current Above Normal4-6 Cylinder #4 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
654-7 Engine Injector Cylinder #04 : Not Responding Properly4-7 Cylinder #4 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
655-2 Engine Injector Cylinder #05 : Erratic,5-2 Cylinder #5 Injector : Erratic,Troubleshooting, “Injector Solenoid – Test”
Intermittent, or IncorrectIntermittent, or Incorrect
655-5 Engine Injector Cylinder #05 : Current Below Normal5-5 Cylinder #5 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
655-6 Engine Injector Cylinder #05 : Current Above Normal5-6 Cylinder #5 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
655-7 Engine Injector Cylinder #05 : Not Responding Properly5-7 Cylinder #5 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
656-2 Engine Injector Cylinder #06 : Erratic, Intermittent, or Incorrect6-2 Cylinder #6 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
656-5 Engine Injector Cylinder #06 : Current Below Normal6-5 Cylinder #6 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
656-6 Engine Injector Cylinder #06 : Current Above Normal6-6 Cylinder #6 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
656-7 Engine Injector Cylinder #06 : Not Responding Properly6-7 Cylinder #6 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
657-2 Engine Injector Cylinder #07 : Erratic, Intermittent, or Incorrect7-2 Cylinder #7 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
657-5 Engine Injector Cylinder #07 : Current Below Normal7-5 Cylinder #7 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
657-6 Engine Injector Cylinder #07 : Current Above Normal7-6 Cylinder #7 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
657-7 Engine Injector Cylinder #07 : Not Responding Properly7-7 Cylinder #7 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
658-2 Engine Injector Cylinder #08 : Erratic, Intermittent, or Incorrect8-2 Cylinder #8 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
658-5 Engine Injector Cylinder #08 : Current Below Normal8-5 Cylinder #8 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
658-6 Engine Injector Cylinder #08 : Current Above Normal8-6 Cylinder #8 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
658-7 Engine Injector Cylinder #08 : Not Responding Properly8-7 Cylinder #8 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
659-2 Engine Injector Cylinder #09 : Erratic, Intermittent, or Incorrect9-2 Cylinder #9 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
659-5 Engine Injector Cylinder #09 : Current Below Normal9-5 Cylinder #9 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
659-6 Engine Injector Cylinder #09 : Current Above Normal9-6 Cylinder #9 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
659-7 Engine Injector Cylinder #09 : Not Responding Properly9-7 Cylinder #9 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
660-2 Engine Injector Cylinder #10 : Erratic, Intermittent, or Incorrect10-2 Cylinder #10 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
660-5 Engine Injector Cylinder #10 : Current Below Normal10-5 Cylinder #10 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
660-6 Engine Injector Cylinder #10 : Current Above Normal10-6 Cylinder #10 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
660-7 Engine Injector Cylinder #10 : Not Responding Properly10-7 Cylinder #10 Injector : NotTroubleshooting, “Injector Solenoid – Test”
Responding Properly
661-2 Engine Injector Cylinder #11 : Erratic, Intermittent, or Incorrect11-2 Cylinder #11 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
661-5 Engine Injector Cylinder #11 : Current Below Normal11-5 Cylinder #11 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
661-6 Engine Injector Cylinder #11 : Current Above Normal11-6 Cylinder #11 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
661-7 Engine Injector Cylinder #11 : Not Responding Properly11-7 Cylinder #11 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
662-2 Engine Injector Cylinder #12 : Erratic, Intermittent, or Incorrect12-2 Cylinder #12 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
662-5 Engine Injector Cylinder #12 : Current Below Normal12-5 Cylinder #12 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
662-6 Engine Injector Cylinder #12 : Current Above Normal12-6 Cylinder #12 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
662-7 Engine Injector Cylinder #12 : Not Responding Properly12-7 Cylinder #12 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
663-2 Engine Injector Cylinder #13 : Erratic, Intermittent, or Incorrect13-2 Cylinder #13 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
663-5 Engine Injector Cylinder #13 : Current Below Normal13-5 Cylinder #13 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
663-6 Engine Injector Cylinder #13 : Current Above Normal13-6 Cylinder #13 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
663-7 Engine Injector Cylinder #13 : Not Responding Properly13-7 Cylinder #13 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
664-2 Engine Injector Cylinder #14 : Erratic, Intermittent, or Incorrect14-2 Cylinder #14 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
664-5 Engine Injector Cylinder #14 : Current Below Normal14-5 Cylinder #14 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
664-6 Engine Injector Cylinder #14 : Current Above Normal14-6 Cylinder #14 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
664-7 Engine Injector Cylinder #14 : Not Responding Properly14-7 Cylinder #14 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
665-2 Engine Injector Cylinder #15 : Erratic, Intermittent, or Incorrect15-2 Cylinder #15 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
665-5 Engine Injector Cylinder #15 : Current Below Normal15-5 Cylinder #15 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
665-6 Engine Injector Cylinder #15 : Current Above Normal15-6 Cylinder #15 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
665-7 Engine Injector Cylinder #15 : Not Responding Properly15-7 Cylinder #15 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
666-2 Engine Injector Cylinder #16 : Erratic, Intermittent, or Incorrect16-2 Cylinder #16 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
666-5 Engine Injector Cylinder #16 : Current Below Normal16-5 Cylinder #16 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
Troubleshooting, “Injector Solenoid – Test”
666-6 Engine Injector Cylinder #16 : Current Above Normal16-6 Cylinder #16 Injector : Current Above Normal
666-7 Engine Injector Cylinder #16 : Not Responding Properly16-7 Cylinder #16 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
667-2 Engine Injector Cylinder #17 : Erratic, Intermittent, or Incorrect2493-2 Cylinder #17 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
667-5 Engine Injector Cylinder #17 : Current Below Normal2493-5 Cylinder #17 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
667-6 Engine Injector Cylinder #17 : Current Above Normal2493-6 Cylinder #17 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
667-7 Engine Injector Cylinder #17 : Not Responding Properly2493-7 Cylinder #17 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
668-2 Engine Injector Cylinder #18 : Erratic, Intermittent, or Incorrect18-2 Cylinder #18 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
668-5 Engine Injector Cylinder #18 : Current Below Normal2494-5 Cylinder #18 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
668-6 Engine Injector Cylinder #18 : Current Above Normal2494-6 Cylinder #18 Injector : Current Above NormalTroubleshooting, “Injector Solenoid – Test”
668-7 Engine Injector Cylinder #18 : Not Responding Properly2494-7 Cylinder #18 Injector : Not Responding ProperlyTroubleshooting, “Injector Solenoid – Test”
669-2 Engine Injector Cylinder #19 : Erratic, Intermittent, or Incorrect2495-2 Cylinder #19 Injector : Erratic, Intermittent, or IncorrectTroubleshooting, “Injector Solenoid – Test”
669-5 Engine Injector Cylinder #19 : Current Below Normal2495-5 Cylinder #19 Injector : Current Below NormalTroubleshooting, “Injector Solenoid – Test”
669-6 Engine Injector
Cylinder #19 : Current
Above Normal		2495-6 Cylinder #19
Injector : Current
Above Normal		Troubleshooting, “Injector Solenoid – Test”
669-7 Engine Injector
Cylinder #19 : Not
Responding Properly		2495-7 Cylinder #19
Injector : Not
Responding
Properly		Troubleshooting, “Injector Solenoid – Test”
670-2 Engine Injector
Cylinder #20 : Erratic,
Intermittent, or
Incorrect		20-2 Cylinder #20
Injector : Erratic,
Intermittent, or
Incorrect		Troubleshooting, “Injector Solenoid – Test”
670-5 Engine Injector
Cylinder #20 : Current
Below Normal		2496-5 Cylinder #20
Injector : Current
Below Normal		Troubleshooting, “Injector Solenoid – Test”
670-6 Engine Injector
Cylinder #20 : Current
Above Normal		2496-6 Cylinder #20
Injector : Current
Above Normal		Troubleshooting, “Injector Solenoid – Test”
670-7 Engine Injector
Cylinder #20 : Not
Responding Properly		2496-7 Cylinder #20
Injector : Not
Responding
Properly		Troubleshooting, “Injector Solenoid – Test”
677-5 Engine Starter
Motor Relay : Current
Below Normal		2727-5 Starting
System #1 Relay :
Current Below
Normal		Troubleshooting, “Starting – Test”
677-5 Engine Starter
Motor Relay : Current
Below Normal		2727-5 Starting
System #1 Relay :
Current Below
Normal		Troubleshooting, “Starting – Test”
677-6 Engine Starter
Motor Relay : Current
Above Normal		2727-6 Starting
System #1 Relay :
Current Above
Normal		Troubleshooting, “Starting – Test”
677-6 Engine Starter
Motor Relay : Current
Above Normal		2728-6 Starting
System #2 Relay :
Current Above
Normal		Troubleshooting, “Starting – Test”
678-3 ECU 8 Volts DC
Supply : Voltage Above
Normal		41-3 8 Volt DC
Supply : Voltage
Above Normal		Troubleshooting, “Sensor Supply – Test”
678-4 ECU 8 Volts DC
Supply : Voltage Below
Normal		41-4 8 Volt DC
Supply : Voltage
Below Normal		Troubleshooting, “Sensor Supply – Test”
723-8 Engine Speed
Sensor #2 : Abnormal
Frequency, Pulse Width,
or Period		342-8 Secondary
Engine Speed
Sensor : Abnormal
Frequency, Pulse
Width, or Period		Troubleshooting, “Speed/Timing – Test”
723-11 Engine Speed
Sensor #2 : Other
Failure Mode		342-11 Secondary
Engine Speed
Sensor : Other
Failure Mode		Troubleshooting, “Speed/Timing – Test”
1076-7 Engine Fuel
Injection Pump Fuel
Control Valve : Not
Responding Properly		337-2 Remote
Emergency Stop
Switch : Erratic,
Intermittent, or
Incorrect		Troubleshooting, “Shutdown – Test”
1076-7 Engine Fuel
Injection Pump Fuel
Control Valve : Not
Responding Properly		18-7 Fuel Control
Valve : Not
Responding
Properly		The actual position and the desired position of
the fuel actuator is not within specifications.
Replace the fuel control valve.
1076-8 Engine Fuel
Injection Pump Fuel
Control Valve :
Abnormal Frequency,
Pulse Width, or Period		18-8 Fuel Control
Valve : Abnormal
Frequency, Pulse
Width, or Period		Troubleshooting, “Fuel Control – Test”
1076-9 Engine Fuel
Injection Pump Fuel
Control Valve :
Abnormal Update Rate		18-9 Fuel Control
Valve : Abnormal
Update Rate		Troubleshooting, “Fuel Control – Test”
1076-11 Engine Fuel
Injection Pump Fuel
Control Valve : Other
Failure Mode		18-11 Fuel Control
Valve : Other Failure
Mode		During a self-test, the fuel control valve has
detected an internal fault. Replace the fuel
control valve.
1076-12 Engine Fuel
Injection Pump Fuel
Control Valve : Failure		18-12 Fuel Control
Valve : Failure		During a self-test, the fuel control valve has
detected an internal fault. Replace the fuel
control valve.
1111-2 Engine
Protection System Configuration : Erratic,
Intermittent, or
Incorrect		268-2 Programmed
Parameter Fault :
Erratic, Intermittent,
or Incorrect		Troubleshooting, “Configuration Parameters”
1176-3 Engine
Turbocharger 1 Compressor Inlet Pressure : Voltage Above Norm		2738-3 Turbocharger
#1 Compressor Inlet Pressure Sensor : Voltage Above Normal		Troubleshooting, “Sensor Signal (Analog, Active) – Test”
1176-4 Engine
Turbocharger 1 Compressor Inlet Pressure : Voltage Below Normal		2738-4 Turbocharger
#1 Compressor Inlet Pressure Sensor : Voltage Below Normal		Troubleshooting, “Sensor Signal (Analog, Active) – Test”
1177-3 Engine
Turbocharger 2 Compressor Inlet Pressure : Voltage Above Normal		2739-3 Turbocharger
#2 Compressor Inlet Pressure Sensor : Voltage Above Normal		Troubleshooting, “Sensor Signal (Analog, Active) – Test”
1177-4 Engine
Turbocharger 2 Compressor Inlet Pressure : Voltage Below Normal		2739-4 Turbocharger
#2 Compressor Inlet Pressure Sensor : Voltage Below Normal		Troubleshooting, “Sensor Signal (Analog, Active) – Test”
1180-3 Engine
Turbocharger 1 Turbine Inlet Temperature : Voltage Above Normal		1492-3 Left Turbo Turbine Inlet Temperature Sensor : Voltage Above NormalTroubleshooting, “Sensor Signal (PWM) – Test”
1180-4 Engine
Turbocharger 1 Turbine Inlet Temperature : Voltage Below Normal		1492-4 Left Turbo Turbine Inlet Temperature Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (PWM) – Test”
1180-8 Engine
Turbocharger 1 Turbine Inlet Temperature : Abnormal Frequency, Pulse Width, or Period		1492-8 Left Turbo Turbine Inlet Temperature Sensor : Abnormal Frequency, Pulse Width, or PeriodTroubleshooting, “Sensor Signal (PWM) – Test”
1181-3 Engine
Turbocharger 2 Turbine Inlet Temperature : Voltage Above Normal		1491-3 Right Turbo Turbine Inlet Temperature Sensor :Troubleshooting, “Sensor Signal (PWM) – Test”
Voltage Above Normal
1181-4 Engine
Turbocharger 2 Turbine Inlet Temperature : Voltage Below Normal		1491-4 Right Turbo Turbine Inlet Temperature Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (PWM) – Test”
1181-8 Engine
Turbocharger 2 Turbine Inlet Temperature : Abnormal Frequency, Pulse Width, or Period		1491-8 Right Turbo Turbine Inlet Temperature Sensor : Abnormal Frequency, Pulse Width, or PeriodTroubleshooting, “Sensor Signal (PWM) – Test”
1203-3 Engine Auxiliary Coolant Pressure : Voltage Above Normal2301-3 Aftercooler Coolant Pump Outlet Pressure Sensor : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
1203-4 Engine Auxiliary Coolant Pressure : Voltage Below Normal2301-4 Aftercooler Coolant Pump Outlet Pressure Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
1208-3 Engine Pre-filter Oil Pressure : Voltage Above Normal542-3 Engine Oil Pressure Sensor – Before Oil Filter : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
1208-4 Engine Pre-filter Oil Pressure : Voltage Below Normal542-4 Engine Oil Pressure Sensor – Before Oil Filter : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
1208-10 Engine Percent Torque At Point 4 : Abnormal Rate of Change542-10 Engine Oil Pressure Sensor – Before Oil Filter : Abnormal Rate of ChangeTroubleshooting, “Sensor Supply – Test”
1231-9 J1939 Network #2 : Abnormal Update Rate2348-9 SAE J1939
Data Link #2 : Abnormal Update Rate		Troubleshooting, “Data Link – Test”
1382-3 Engine Fuel Filter (suction side) Differential Pressure : Voltage Above Normal3418-3 Fuel Filter (suction side) Differential Pressure Sensor : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
1382-4 Engine Fuel Filter (suction side) Differential Pressure : Voltage Below Normal3418-4 Fuel Filter (suction side) Differential Pressure Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
1627-5 Fuel Pump Relay : Current Below Normal1627-5 Fuel Pump Relay : Current Below NormalTroubleshooting, “Fuel Priming Pump – Test”
1627-6 Fuel Pump Relay : Current Above Normal1627-6 Fuel Pump Relay : Current Above NormalTroubleshooting, “Fuel Priming Pump – Test”
1656-2 Engine Automatic Start Enable Switch : Erratic, Intermittent, or Incorrect336-2 Engine Control Switch : Erratic, Intermittent, or IncorrectTroubleshooting, “Data Link – Test”
2813-5 Engine Air Shutoff Command Status : Current Below Normal446-5 Air Shutdown Relay : Current Below NormalTroubleshooting, “Shutdown – Test”
2813-6 Engine Air Shutoff Command Status : Current Above Normal446-6 Air Shutoff Relay shortTroubleshooting, “Shutdown – Test”
2853-9 Communications Connection : Abnormal Update Rate2853-9 Engine Aftercooler Coolant Temperature Control Module : Abnormal Update RateTroubleshooting, “Data Link – Test”
2854-9 Communications Carrier : Abnormal Update Rate2854-9 Coolant Temperature Control Module : Abnormal Update RateTroubleshooting, “Data Link – Test”
3551-5 Engine Oil Priming State : Current Below Normal338-5 Engine Pre- Lube Pump Relay : Current Below NormalTroubleshooting, “Prelubrication – Test”
3551-6 Engine Oil Priming State : Current Above Normal338-6 Engine Pre- Lube Pump Relay : Current Above NormalTroubleshooting, “Prelubrication – Test”
3510-3 Sensor Supply Voltage 2 : Voltage Above Normal2131-3 5 V Sensor DC Power Supply #2 : Voltage Above NormalTroubleshooting, “Sensor Supply – Test”
3510-4 Sensor Supply Voltage 2 : Voltage Below Normal2131-4 5 V Sensor DC Power Supply #2 : Voltage Below NormalTroubleshooting, “Sensor Supply – Test”
3468-3 Engine Fuel Temperature 2 : Voltage Above Normal2323-3 Fuel Rail Temperature Sensor : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
3468-4 Engine Fuel Temperature 2 : Voltage Below Normal2323-4 Fuel Rail Temperature Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Passive) – Test”
4193-19 Engine Coolant Pump Outlet Temperature Sensor conditions not met2349-19 Engine Coolant Pump Outlet Temperature Sensor conditions not metTroubleshooting, “Coolant Temperature Control Module – Test”
4202-8 Engine Speed Sensor #3 : Abnormal Frequency, Pulse Width, or Period2710-8 Engine Tertiary Speed Sensor : Abnormal Frequency, Pulse Width, or PeriodTroubleshooting, “Speed/Timing – Test”
4202-11 Engine Speed Sensor #3 : Other Failure Mode2710-11 Engine Tertiary Speed Sensor : Other Failure ModeTroubleshooting, “Speed/Timing – Test”
3418-3 Fuel Filter (suction side) Differential Pressure Sensor : Voltage Above Normal1382-3 Engine Fuel Filter (suction side) Differential Pressure : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
3418-4 Fuel Filter (suction side) Differential Pressure Sensor : Voltage Below Normal1382-4 Engine Fuel Filter (suction side) Differential Pressure : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
5417-3 Primary Fuel Filter Inlet Pressure Sensor: Voltage Above Normal3417-3 Fuel Filter (suction side) Intake Pressure Sensor : Voltage Above NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”
5417-4 Primary Fuel Filter Inlet Pressure Sensor: Voltage Below Normal3417-4 Fuel Filter (suction side) Intake Pressure Sensor : Voltage Below NormalTroubleshooting, “Sensor Signal (Analog, Active) – Test”

Cross-Reference Information for Diagnostic Codes that are Generated by the TCM Table 3 lists the diagnostic codes that apply to the TCM. MID No. 094 is used to identify the TCM.

Use Cat ET to determine the diagnostic codes that are active or logged. Then refer to the appropriate troubleshooting procedure for more information.

Note: Use Cat ET to clear diagnostic codes. Keyswitch power to the engine must be cycled to complete clearing of the codes from the TCM.

Table 3

SPN-FMI Code and DescriptionTroubleshooting Procedure
168-3 Battery Potential / Power Input 1 : Voltage Above NormalTroubleshooting, “Coolant Temperature Control Module – Test”
168-4 Battery Potential / Power Input 1 : Voltage Below NormalTroubleshooting, “Coolant Temperature Control Module – Test”
628-2 Program Memory : Erratic, Intermittent, or IncorrectDuring a self-test, the TCM has detected an internal memory fault. Replace the TCM.
630-2 Calibration Memory : Erratic, Intermittent, or IncorrectDuring a self-test, the TCM has detected a problem writing calibration data to memory. The TCM will continue to operate using calibration data that was stored previously. Replace the TCM during the next service interval.
2901-0 ECU Part Number : High – most severe (3)The internal temperature of the TCM has exceeded the operational range of the unit. The three-way valve is commanded to the fault position. If necessary, install heat shields or relocate the TCM.
2901-3 ECU Part Number : Voltage Above NormalThe TCM has detected an electrical problem with the internal temperature sensor for the unit. The three-way valve is commanded to the fault position. Replace the TCM.
2901-4 ECU Part Number : Voltage Below NormalThe TCM has detected an electrical problem with the internal temperature sensor for the unit. The TCM will continue to operate normally. Replace the TCM during the next service interval.
4193-0 Engine Coolant Pump Outlet Temperature : High – most severe (3)Troubleshooting, “Coolant Temperature Is High”
4193-2 Engine Coolant Pump Outlet Temperature : Erratic, Intermittent, or IncorrectTroubleshooting, “Coolant Temperature Control Module – Test”
4193-3 Engine Coolant Pump Outlet Temperature : Voltage Above NormalTroubleshooting, “Coolant Temperature Control Module – Test”
4193-4 Engine Coolant Pump Outlet Temperature : Voltage Below NormalTroubleshooting, “Coolant Temperature Control Module – Test”

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