3512C Petroleum Engines with Dynamic Gas Blending Caterpillar

Diagnostic trouble codes are generated by the Electronic Control Module (ECM) to alert the operator that a problem has been detected. The problem can be in the electronic system or in the mechanical system. Diagnostic trouble codes are used by the service technician to assist in the identification of the nature of the problem. Caterpillar Electronic Technician (ET) is a software program that can be used by the service technician to view the diagnostic code information. Refer to Troubleshooting, "Electronic Service Tools" for detailed information that is related to the functionality of Cat ET.

The CAN data link is used by the ECM to communicate with controllers, display modules, and electronic service tools. The ECM transmits information and the ECM receives information over the CAN data link. The communications protocol and the diagnostic messages over the CAN data link follow the SAE J1939 industrial standards.

Note: The SAE J1939 industrial standards refer to the control module for the engine as the Electronic Control Unit (ECU). This manual refers to this control module as the Electronic Control Module (ECM).

Communications with electronic service tools aid the technician in diagnostics and troubleshooting for the engine and the engine subsystems. When a problem with the engine is detected by the ECM, the ECM communicates information about the problem over the CAN data link. The problem may be physically detected by one of the input or output circuits by the ECM. A problem can also be communicated via the data link to the ECM. The ECM transmits this information over the data link in a form of a diagnostic trouble code and code description.

The diagnostic trouble code has a format of a two-element code. The following terms describe the elements of the code:

Suspect Parameter Number (SPN) - The SPN is a code which is assigned to each component. The SPN identifies the origin of the problem.

Failure Mode Identifier (FMI) - The FMI is used with the SPN to provide more information that relates to the problem. The FMI may indicate that a problem with an electronic circuit or an electronic component has been detected. The FMI may also indicate that an abnormal operating condition has been detected.

The codes are displayed in the form “SPN-FMI”. The ECM also attaches a text description to the message that is transmitted over the data link. This text description is used to describe the SPN-FMI code.

The failure mode identifiers can be divided into two categories:

• Codes that indicate that a problem with an electronic circuit or an electronic component has been detected

• Codes that indicate that an engine event or a system event has been detected

The failure mode of the fault is determined by evaluating the electronic signal from the suspect circuit. Typically, the first category of code is generated when the signal for the circuit is outside the range of the sensor. The second category of code is an engine event. An engine event indicates that the sensor signal is OK, but the signal is outside the normal operating range of the engine parameter. Illustration 1 is an example that represents the evaluation of a sensor signal by the ECM.

Illustration 1	g01365757
Example of the typical operating range of a sensor (1) This area represents the normal operating range of the engine parameter. (2) In these areas, the engine is operating in an unsafe operating range of the monitored parameter. A diagnostic code that indicates an engine event will be generated for the monitored parameter. The sensor circuit does not have an electronic problem. Refer to Systems Operation, "Engine Monitoring System" for additional information that is related to engine events. (3) In these areas, the signal from the sensor is outside of the operating range of the sensor. The sensor circuit has an electronic problem. A diagnostic code will be generated for the sensor circuit.

When you troubleshoot a diagnostic trouble code, be sure to evaluate the problem from the viewpoint of an interpretation of the electrical signal. Refer to the above illustration for an evaluation of the sensor signal.

Cross-Reference Information for Diagnostic Codes

Table 1 is a list of the diagnostic codes for this engine. The diagnostic codes are cross-referenced with the appropriate procedure that can be used to troubleshoot the code.

Portions of this material are reprinted with permission from SAE J1939DA_201607^© 2016 SAE International. SAE International is not responsible for any use or translation of this material, in whole or in part. Please contact SAE International to obtain a complete copy of SAE J1939DA_201607, the official definitive source of this standard.

Table 1

List of Diagnostic Trouble Codes
J1939 Code and Description	Troubleshooting Procedure
91-3 Accelerator Pedal Position 1 : Voltage Above Normal	Troubleshooting, "Speed Control - Test"
91-4 Accelerator Pedal Position 1 : Voltage Below Normal
91-8 Accelerator Pedal Position 1 : Abnormal Frequency, Pulse Width, or Period
94-16 Engine Fuel Delivery Pressure : High - Moderately Severe (2)	Troubleshooting, "Fuel Pressure Is High (Diesel)"
95-15 Engine Fuel Filter Differential Pressure : High - Least Severe (1)	Troubleshooting, "Fuel Filter Is Restricted"
95-16 Engine Fuel Filter Differential Pressure : High - Moderately Severe (2)
95-0 Engine Fuel Filter Differential Pressure : High - Most Severe (3)
95-2 Engine Fuel Filter Differential Pressure : Erratic, Intermittent, or Incorrect	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
99-15 Engine Oil Filter Differential Pressure : High - Least Severe (1)	Troubleshooting, "Oil Filter Differential Pressure Problem"
99-16 Engine Oil Filter Differential Pressure : High - Moderately Severe (2)
99-0 Engine Oil Filter Differential Pressure : High - Most Severe (3)
99-2 Engine Oil Filter Differential Pressure : Erratic, Intermittent, or Incorrect	The 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 Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
100-4 Engine Oil Pressure : Voltage Below Normal
100-17 Engine Oil Pressure : Low - Least Severe (1)	Troubleshooting, "Oil Pressure Is Low"
100-18 Engine Oil Pressure : Low - Moderately Severe (2)	Troubleshooting, "Oil Pressure Is Low"
100-1 Engine Oil Pressure : Low - Most Severe (3)
101-3 Engine Crankcase Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
101-4 Engine Crankcase Pressure : Voltage Below Normal
101-13 Engine Crankcase Pressure : Calibration Required	Troubleshooting, "Sensor Calibration Required - Test"
101-15 Engine Crankcase Pressure : High - Least Severe (1)	Troubleshooting, "Crankcase Pressure Is High"
101-16 Engine Crankcase Pressure : High - Moderately Severe (2)
101-0 Engine Crankcase Pressure : High - Most Severe (3)
105-3 Engine Intake Manifold #1 : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
105-4 Engine Intake Manifold #1 : Voltage Below Normal
107-15 Engine Air Filter 1 Differential Pressure : High - Most Severe (3)	Troubleshooting, "Inlet Air Is Restricted"
107-16 Engine Air Filter 1 Differential Pressure : High - Moderately Severe (2)
108-3 Barometric Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
108-4 Barometric Pressure : Voltage Below Normal
108-21 Barometric Pressure : Data Drifted Low	Troubleshooting, "Sensor Calibration Required - Test"
110-3 Engine Coolant Temperature : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
110-4 Engine Coolant Temperature : Voltage Below Normal
110-15 Engine Coolant Temperature : High - Least Severe (1)	Troubleshooting, "Coolant Temperature Is High"
110-16 Engine Coolant Temperature : High - Moderately Severe (2)
110-0 Engine Coolant Temperature : High - Most Severe (3)
110-17 Engine Coolant Temperature : Low - Least Severe (1)	Troubleshooting, "Coolant Temperature Is Low"
110-18 Engine Coolant Temperature : Low - Moderately Severe (2)
110-1 Engine Coolant Temperature : Low - Most Severe (3)
111-17 Engine Coolant Level : Low - Least Severe (1)	Troubleshooting, "Coolant Level Is Low"
111-18 Engine Coolant Level : Low - Moderately Severe (2)	Troubleshooting, "Coolant Level Is Low"
111-1 Engine Coolant Level : Low - Most Severe (3)
168-3 Battery Potential / Power Input 1 : Voltage Above Normal	Troubleshooting, "Electrical Power Supply - Test"
168-4 Battery Potential / Power Input 1 : Voltage Below Normal
173-9 Engine Exhaust Temperature Gas : Abnormal Update Rate	Troubleshooting, "Data Link - Test"
175-15 Engine Oil Temperature 1 : High - Least Severe (1)	Troubleshooting, "Engine Oil Temperature Is High"
175-16 Engine Oil Temperature 1 : High - Moderately Severe (2)
175-0 Engine Oil Temperature 1 : High - Most Severe (3)
175-3 Engine Oil Temperature 1 : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
175-4 Engine Oil Temperature 1 : Voltage Below Normal
190-15 Engine Speed : High - Least Severe (1)	Troubleshooting, "Engine Overspeeds"
190-0 Engine Speed : High - Most Severe (3)
190-8 Engine Speed : Abnormal Frequency, Pulse Width, or Period	Troubleshooting, "Speed/Timing - Test"
234-2 Software Identification : Erratic, Intermittent, or Incorrect	Troubleshooting, "ECM Software - Install"
234-14 Software Identification : Special Instruction	Troubleshooting, "Data Link Configuration Status - Test"
296-14 Transmission Control : Special Instruction	Troubleshooting, "Data Link Configuration Status - Test"
430-5 Engine Starter Solenoid Voltage : Current Below Normal	Troubleshooting, "Starting - Test"
430-6 Engine Starter Solenoid Voltage : Current Above Normal	Troubleshooting, "Starting - Test"
631-2 Calibration Module : Erratic, Intermittent, or Incorrect	Troubleshooting, "ECM Software - Install"
632-5 Engine Fuel Shutoff Valve 1: Current Below Normal	Troubleshooting, "Fuel Shutoff - Test"
632-6 Engine Fuel Shutoff Valve 1: Current Above Normal
632-7 Engine Fuel Shutoff Valve 1: Not Responding Properly	Troubleshooting, "Fuel Shutoff - Test"
637-13 Engine Timing Sensor : Calibration Required	Troubleshooting, "Timing - Calibrate"
639-9 J1939 Network #1 : Abnormal Update Rate	Troubleshooting, "Data Link - Test "
651-5 Engine Injector Cylinder #01 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
651-6 Engine Injector Cylinder #01 : Current Above Normal
652-5 Engine Injector Cylinder #02 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
652-6 Engine Injector Cylinder #02 : Current Above Normal
653-5 Engine Injector Cylinder #03 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
653-6 Engine Injector Cylinder #03 : Current Above Normal
654-5 Engine Injector Cylinder #04 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
654-6 Engine Injector Cylinder #04 : Current Above Normal
655-5 Engine Injector Cylinder #05 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
655-6 Engine Injector Cylinder #05 : Current Above Normal
656-5 Engine Injector Cylinder #06 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
656-6 Engine Injector Cylinder #06 : Current Above Normal
657-5 Engine Injector Cylinder #07 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
657-6 Engine Injector Cylinder #07 : Current Above Normal
658-5 Engine Injector Cylinder #08 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
658-6 Engine Injector Cylinder #08 : Current Above Normal
659-5 Engine Injector Cylinder #09 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
659-6 Engine Injector Cylinder #09 : Current Above Normal
660-5 Engine Injector Cylinder #10 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
660-6 Engine Injector Cylinder #10 : Current Above Normal	Troubleshooting, "Injector Solenoid - Test"
661-5 Engine Injector Cylinder #11 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
661-6 Engine Injector Cylinder #11 : Current Above Normal
662-5 Engine Injector Cylinder #12 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
662-6 Engine Injector Cylinder #12 : Current Above Normal
677-5 Engine Starter Motor Relay : Current Below Normal	Troubleshooting, "Starting - Test"
677-6 Engine Starter Motor Relay : Current Above Normal
678-3 ECU 8 Volts DC Supply : Voltage Above Normal	Troubleshooting, "Sensor Supply - Test"
678-4 ECU 8 Volts DC Supply : Voltage Below Normal
723-8 Engine Speed Sensor #2 : Abnormal Frequency, Pulse Width, or Period	Troubleshooting, "Speed/Timing - Test"
723-19 Engine Speed Sensor #2 : Data Error	Troubleshooting, "Speed/Timing - Test"
970-2 Engine Auxiliary Engine Shutdown Switch : Erratic, Intermittent, or Incorrect	Troubleshooting, "Emergency Stop - Test"
970-31 Engine Auxiliary Engine Shutdown Switch : Condition Exists	The emergency stop switch is activated. Reset the emergency stop switch. The power to the engine ECM must be cycled before the engine is allowed to restart. If an electrical problem with the switch or with the switch circuit is suspected, refer to "Troubleshooting""Engine Shutdown Occurrence" .
971-31 Engine Derate Switch : Condition Exists	The monitoring system override switch has been activated. Engine derates are prevented when this event is active. The DGB system will be inactive during the engine derate condition. If an electrical problem with the switch or with the switch circuit is suspected, Refer to "Troubleshooting""Engine Shutdown Override Occurrence".
1110-31 Engine Protection System has Shutdown Engine : Condition Exists	The engine protection system has shutdown the engine. The "Engine Protection Override Switch" can be activated to resume operation. If an electrical problem with the switch or with the switch circuit is suspected, refer to Troubleshooting, "Switch Circuits - Test"
1137-15 Engine Exhaust Gas Port 1 Temperature : High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
1137-0 Engine Exhaust Gas Port 1 Temperature : High - Most Severe (3)
1137-19 Engine Exhaust Gas Port 1 Temperature : Data Error
1138-15 Engine Exhaust Gas Port 2 Temperature : High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
1138-0 Engine Exhaust Gas Port 2 Temperature : High - Most Severe (3)
1138-19 Engine Exhaust Gas Port 2 Temperature : Data Error
1139-15 Engine Exhaust Gas Port 3 Temperature : High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
1139-0 Engine Exhaust Gas Port 3 Temperature : High - Most Severe (3)
1139-19 Engine Exhaust Gas Port 3 Temperature : Data Error
1140-15 Engine Exhaust Gas Port 4 Temperature : High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
1140-0 Engine Exhaust Gas Port 4 Temperature : High - Most Severe (3)
1140-19 Engine Exhaust Gas Port 4 Temperature : Data Error
1141-15 Engine Exhaust Gas Port 5 Temperature : High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
1141-0 Engine Exhaust Gas Port 5 Temperature : High - Most Severe (3)
1141-19 Engine Exhaust Gas Port 5 Temperature : Data Error
1142-15 Engine Exhaust Gas Port 6 Temperature : High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
1142-0 Engine Exhaust Gas Port 6 Temperature : High - Most Severe (3)
1142-19 Engine Exhaust Gas Port 6 Temperature : Data Error
1143-15 Engine Exhaust Gas Port 7 Temperature : High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
1143-0 Engine Exhaust Gas Port 7 Temperature : High - Most Severe (3)
1143-19 Engine Exhaust Gas Port 7 Temperature : Data Error
1144-15 Engine Exhaust Gas Port 8 Temperature : High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
1144-0 Engine Exhaust Gas Port 8 Temperature : High - Most Severe (3)
1144-19 Engine Exhaust Gas Port 8 Temperature : Data Error
1145-15 Engine Exhaust Gas Port 9 Temperature : High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
1145-0 Engine Exhaust Gas Port 9 Temperature : High - Most Severe (3)
1145-19 Engine Exhaust Gas Port 9 Temperature : Data Error
1146-15 Engine Exhaust Gas Port 10 Temperature : High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
1146-0 Engine Exhaust Gas Port 10 Temperature : High - Most Severe (3)
1146-19 Engine Exhaust Gas Port 10 Temperature : Data Error
1147-15 Engine Exhaust Gas Port 11 Temperature : High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
1147-0 Engine Exhaust Gas Port 11 Temperature : High - Most Severe (3)
1147-19 Engine Exhaust Gas Port 11 Temperature : Data Error
1148-15 Engine Exhaust Gas Port 12 Temperature : High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
1148-0 Engine Exhaust Gas Port 12 Temperature : High - Most Severe (3)
1148-19 Engine Exhaust Gas Port 12 Temperature : Data Error
1176-3 Engine Turbocharger 1 Compressor Inlet Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
1176-4 Engine Turbocharger 1 Compressor Inlet Pressure : Voltage Below Normal
1177-3 Engine Turbocharger 2 Compressor Inlet Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
1177-4 Engine Turbocharger 2 Compressor Inlet Pressure : Voltage Below Normal
1180-3 Engine Turbocharger 1 Turbine Inlet Temperature : Voltage Above Normal	Troubleshooting, "Sensor Signal (PWM) - Test"
1180-4 Engine Turbocharger 1 Turbine Inlet Temperature : Voltage Below Normal
1180-8 Engine Turbocharger 1 Turbine Inlet Temperature : Abnormal Frequency, Pulse Width, or Period
1180-15 Engine Turbocharger 1 Turbine Inlet Temperature : High - Least Severe (1)	Troubleshooting, "Turbocharger Turbine Temperature Is High"
1180-16 Engine Turbocharger 1 Turbine Inlet Temperature : High - Moderately Severe (2)
1180-0 Engine Turbocharger 1 Turbine Inlet Temperature : High - Most Severe (3)
1181-3 Engine Turbocharger 2 Turbine Inlet Temperature : Voltage Above Normal	Troubleshooting, "Sensor Signal (PWM) - Test"
1181-4 Engine Turbocharger 2 Turbine Inlet Temperature : Voltage Below Normal
1181-8 Engine Turbocharger 2 Turbine Inlet Temperature : Abnormal Frequency, Pulse Width, or Period	Troubleshooting, "Sensor Signal (PWM) - Test"
1181-15 Engine Turbocharger 2 Turbine Inlet Temperature : High - Least Severe (1)	Troubleshooting, "Turbocharger Turbine Temperature Is High"
1181-16 Engine Turbocharger 2 Turbine Inlet Temperature : High - Moderately Severe (2)
1181-0 Engine Turbocharger 2 Turbine Inlet Temperature : High - Most Severe (3)
1208-3 Engine Pre-filter Oil Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
1208-4 Engine Pre-filter Oil Pressure : Voltage Below Normal
1231-9 J1939 Network #2 : Abnormal Update Rate	Troubleshooting, "Data Link - Test"
1231-14 J1939 Network #2 : Special Instruction	Troubleshooting, "Data Link Configuration Status - Test"
1237-31 Engine Shutdown Override Switch : Conditions Exist	The monitoring system override switch has been activated. Engine shutdowns will be prevented when this event is active. The following event will not be overridden: 190 Engine Overspeed event codes If an electrical problem with the switch or with the switch circuit is suspected, Refer to Troubleshooting, "Engine Shutdown Override Occurrence"
1352-19 Engine Cylinder #1 Knock Level : Data Error	Troubleshooting, "Detonation - Test"
1352-3 Engine Cylinder #1 Knock Level : Voltage Above Normal
1352-4 Engine Cylinder #1 Knock Level : Voltage Below Normal
1352-15 Engine Cylinder #1 Knock Level : Data High	Troubleshooting, "Detonation Occurrence"
1353-19 Engine Cylinder #2 Knock Level : Data Error	Troubleshooting, "Detonation - Test"
1353-3 Engine Cylinder #2 Knock Level : Voltage Above Normal
1353-4 Engine Cylinder #2 Knock Level : Voltage Below Normal
1353-15 Engine Cylinder #2 Knock Level : Data High	Troubleshooting, "Detonation Occurrence"
1354-19 Engine Cylinder #3 Knock Level : Data Error	Troubleshooting, "Detonation - Test"
1354-3 Engine Cylinder #3 Knock Level : Voltage Above Normal
1354-4 Engine Cylinder #3 Knock Level : Voltage Below Normal
1354-15 Engine Cylinder #3 Knock Level : Data High	Troubleshooting, "Detonation Occurrence"
1355-19 Engine Cylinder #4 Knock Level : Data Error	Troubleshooting, "Detonation - Test"
1355-3 Engine Cylinder #4 Knock Level : Voltage Above Normal
1355-4 Engine Cylinder #4 Knock Level : Voltage Below Normal
1355-15 Engine Cylinder #4 Knock Level : Data High	Troubleshooting, "Detonation Occurrence"
1356-19 Engine Cylinder #5 Knock Level : Data Error	Troubleshooting, "Detonation - Test"
1356-3 Engine Cylinder #5 Knock Level : Voltage Above Normal
1356-4 Engine Cylinder #5 Knock Level : Voltage Below Normal
1356-15 Engine Cylinder #5 Knock Level : Data High	Troubleshooting, "Detonation Occurrence"
1357-19 Engine Cylinder #6 Knock Level : Data Error	Troubleshooting, "Detonation - Test"
1357-3 Engine Cylinder #6 Knock Level : Voltage Above Normal
1357-4 Engine Cylinder #6 Knock Level : Voltage Below Normal
1357-15 Engine Cylinder #6 Knock Level : Data High	Troubleshooting, "Detonation Occurrence"
1358-19 Engine Cylinder #7 Knock Level : Data Error	Troubleshooting, "Detonation - Test"
1358-3 Engine Cylinder #7 Knock Level : Voltage Above Normal
1358-4 Engine Cylinder #7 Knock Level : Voltage Below Normal
1358-15 Engine Cylinder #7 Knock Level : Data High	Troubleshooting, "Detonation Occurrence"
1359-19 Engine Cylinder #8 Knock Level : Data Error	Troubleshooting, "Detonation - Test"
1359-3 Engine Cylinder #8 Knock Level : Voltage Above Normal
1359-4 Engine Cylinder #8 Knock Level : Voltage Below Normal
1359-15 Engine Cylinder #8 Knock Level : Data High	Troubleshooting, "Detonation Occurrence"
1360-19 Engine Cylinder #9 Knock Level : Data Error	Troubleshooting, "Detonation - Test"
1360-3 Engine Cylinder #9 Knock Level : Voltage Above Normal
1360-4 Engine Cylinder #9 Knock Level : Voltage Below Normal	Troubleshooting, "Detonation - Test"
1360-15 Engine Cylinder #9 Knock Level : Data High	Troubleshooting, "Detonation Occurrence"
1361-19 Engine Cylinder #10 Knock Level : Data Error	Troubleshooting, "Detonation - Test"
1361-3 Engine Cylinder #10 Knock Level : Voltage Above Normal
1361-4 Engine Cylinder #10 Knock Level : Voltage Below Normal
1361-15 Engine Cylinder #10 Knock Level : Data High	Troubleshooting, "Detonation Occurrence"
1362-19 Engine Cylinder #11 Knock Level : Data Error	Troubleshooting, "Detonation - Test"
1362-3 Engine Cylinder #11 Knock Level : Voltage Above Normal
1362-4 Engine Cylinder #11 Knock Level : Voltage Below Normal
1362-15 Engine Cylinder #11 Knock Level : Data High	Troubleshooting, "Detonation Occurrence"
1363-19 Engine Cylinder #12 Knock Level : Data Error	Troubleshooting, "Detonation - Test"
1363-3 Engine Cylinder #12 Knock Level : Voltage Above Normal
1363-4 Engine Cylinder #12 Knock Level : Voltage Below Normal
1363-15 Engine Cylinder #12 Knock Level : Data High	Troubleshooting, "Detonation Occurrence"
1390-3 Engine Fuel Valve #1 Inlet Absolute Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
1390-4 Engine Fuel Valve #1 Inlet Absolute Pressure : Voltage Below Normal
1390-15 Engine Fuel Valve #1 Inlet Absolute Pressure : High - Least Severe (1)	Troubleshooting, "Fuel Pressure Problem (Gas)"
1390-17 Engine Fuel Valve #1 Inlet Absolute Pressure : Low - Least Severe (1)
1442-9 Engine Fuel Valve #1 Position : Abnormal Update Rate	Troubleshooting, "Fuel Actuator - Test"
1656-2 Engine Automatic Start Enable Switch : Erratic, Intermittent, or Incorrect	Troubleshooting, "Engine Control Switch - Test"
1664-31 Engine Automatic Start Failed : Condition Exists	An attempt from the automatic start system failed to start the engine due to an overcrank condition. The starting attempt has exceeded the time that is programmed for the "Crank Duration" parameter. Activation of this code latches an engine shutdown condition. The power to the ECM must be cycled prior to any additional attempts to start the engine. For troubleshooting information that is related to this diagnostic code, refer to Troubleshooting, "Engine Cranks but Does Not Start".
2241-9 Source Address 241 : Abnormal Update Rate	Troubleshooting, "Data Link - Test"
2452-3 Generator Total Real Power : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
2452-8 Generator Total Real Power : Abnormal Frequency, Pulse Width, or Period	Troubleshooting, "Sensor Signal (PWM) - Test"
2452-9 Generator Total Real Power : Abnormal Update Rate	Troubleshooting, "Data Link - Test"
2452-13 Generator Total Real Power : Calibration Required	Troubleshooting, "Configuration Parameters"
2809-15 Engine Air Filter 2 Differential Pressure : High - Least Severe (1)	Troubleshooting, "Inlet Air Is Restricted"
2809-16 Engine Air Filter 2 Differential Pressure : High - Moderately Severe (2)
2813-5 Engine Air Shutoff Command Status : Current Below Normal	Troubleshooting, "Air Shutoff - Test"
2813-6 Engine Air Shutoff Command Status : Current Above Normal
3509-3 Sensor Supply Voltage 1 : Voltage Above Normal	Troubleshooting, "Sensor Supply - Test"
3509-4 Sensor Supply Voltage 1 : Voltage Below Normal
3510-3 Sensor Supply Voltage 2 : Voltage Above Normal	Troubleshooting, "Sensor Supply - Test"
3510-4 Sensor Supply Voltage 2 : Voltage Below Normal
3563-3 Engine Intake Manifold #1 Absolute Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3563-4 Engine Intake Manifold #1 Absolute Pressure : Voltage Below Normal
3563-13 Engine Intake Manifold #1 Absolute Pressure : Calibration Required	Troubleshooting, "Sensor Calibration Required - Test"
3563-21 Engine Intake Manifold #1 Absolute Pressure : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
5418-7 Engine Fuel Actuator #1 : Not Responding Properly	Troubleshooting, "Fuel Actuator - Test"
5418-12 Engine Fuel Actuator #1 : Failure
5578-3 Engine Fuel Delivery Absolute Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
5578-4 Engine Fuel Delivery Absolute Pressure : Voltage Below Normal
5578-21 Engine Fuel Delivery Absolute Pressure : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
5580-3 Engine Filtered Fuel Delivery Absolute Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
5580-4 Engine Filtered Fuel Delivery Absolute Pressure : Voltage Below Normal
5580-17 Engine Filtered Fuel Delivery Absolute Pressure : Low - Least Severe (1)	Troubleshooting, "Fuel Pressure Is Low (Diesel)"
5580-18 Engine Filtered Fuel Delivery Absolute Pressure : Low - Moderately Severe (2)
5580-21 Engine Filtered Fuel Delivery Absolute Pressure : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
5686-15 Engine Exhaust Gas Port #1 Difference from Average Temperature : Data High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
5686-0 Engine Exhaust Gas Port #1 Difference from Average Temperature : Data High - Most Severe (3)
5686-17 Engine Exhaust Gas Port #1 Difference from Average Temperature : Data Low - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is Low"
5686-1 Engine Exhaust Gas Port #1 Difference from Average Temperature : Data Low - Most Severe (3)
5687-15 Engine Exhaust Gas Port #2 Difference from Average Temperature : Data High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
5687-0 Engine Exhaust Gas Port #2 Difference from Average Temperature : Data High - Most Severe (3)
5687-17 Engine Exhaust Gas Port #2 Difference from Average Temperature : Data Low - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is Low"
5687-1 Engine Exhaust Gas Port #2 Difference from Average Temperature : Data Low - Most Severe (3)
5688-15 Engine Exhaust Gas Port #3 Difference from Average Temperature : Data High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
5688-0 Engine Exhaust Gas Port #3 Difference from Average Temperature : Data High - Most Severe (3)
5688-17 Engine Exhaust Gas Port #3 Difference from Average Temperature : Data Low - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is Low"
5688-1 Engine Exhaust Gas Port #3 Difference from Average Temperature : Data Low - Most Severe (3)
5689-15 Engine Exhaust Gas Port #4 Difference from Average Temperature : Data High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
5689-0 Engine Exhaust Gas Port #4 Difference from Average Temperature : Data High - Most Severe (3)
5689-17 Engine Exhaust Gas Port #4 Difference from Average Temperature : Data Low - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is Low"
5689-1 Engine Exhaust Gas Port #4 Difference from Average Temperature : Data Low - Most Severe (3)
5690-15 Engine Exhaust Gas Port #5 Difference from Average Temperature : Data High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
5690-0 Engine Exhaust Gas Port #5 Difference from Average Temperature : Data High - Most Severe (3)
5690-17 Engine Exhaust Gas Port #5 Difference from Average Temperature : Data Low - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is Low"
5690-1 Engine Exhaust Gas Port #5 Difference from Average Temperature : Data Low - Most Severe (3)
5691-15 Engine Exhaust Gas Port #6 Difference from Average Temperature : Data High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
5691-0 Engine Exhaust Gas Port #6 Difference from Average Temperature : Data High - Most Severe (3)
5691-17 Engine Exhaust Gas Port #6 Difference from Average Temperature : Data Low - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is Low"
5691-1 Engine Exhaust Gas Port #6 Difference from Average Temperature : Data Low - Most Severe (3)
5692-15 Engine Exhaust Gas Port #7 Difference from Average Temperature : Data High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
5692-0 Engine Exhaust Gas Port #7 Difference from Average Temperature : Data High - Most Severe (3)
5692-17 Engine Exhaust Gas Port #7 Difference from Average Temperature : Data Low - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is Low"
5692-1 Engine Exhaust Gas Port #7 Difference from Average Temperature : Data Low - Most Severe (3)
5693-15 Engine Exhaust Gas Port #8 Difference from Average Temperature : Data High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
5693-0 Engine Exhaust Gas Port #8 Difference from Average Temperature : Data High - Most Severe (3)
5693-17 Engine Exhaust Gas Port #8 Difference from Average Temperature : Data Low - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is Low"
5693-1 Engine Exhaust Gas Port #8 Difference from Average Temperature : Data Low - Most Severe (3)
5694-15 Engine Exhaust Gas Port #9 Difference from Average Temperature : Data High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
5694-0 Engine Exhaust Gas Port #9 Difference from Average Temperature : Data High - Most Severe (3)
5694-17 Engine Exhaust Gas Port #9 Difference from Average Temperature : Data Low - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is Low"
5694-1 Engine Exhaust Gas Port #9 Difference from Average Temperature : Data Low - Most Severe (3)
5695-15 Engine Exhaust Gas Port #10 Difference from Average Temperature : Data High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
5695-0 Engine Exhaust Gas Port #10 Difference from Average Temperature : Data High - Most Severe (3)
5695-17 Engine Exhaust Gas Port #10 Difference from Average Temperature : Data Low - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is Low"
5695-1 Engine Exhaust Gas Port #10 Difference from Average Temperature : Data Low - Most Severe (3)
5696-15 Engine Exhaust Gas Port #11 Difference from Average Temperature : Data High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
5696-0 Engine Exhaust Gas Port #11 Difference from Average Temperature : Data High - Most Severe (3)
5696-17 Engine Exhaust Gas Port #11 Difference from Average Temperature : Data Low - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is Low"
5696-1 Engine Exhaust Gas Port #11 Difference from Average Temperature : Data Low - Most Severe (3)
5697-15 Engine Exhaust Gas Port #12 Difference from Average Temperature : Data High - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is High"
5697-0 Engine Exhaust Gas Port #12 Difference from Average Temperature : Data High - Most Severe (3)
5697-17 Engine Exhaust Gas Port #12 Difference from Average Temperature : Data Low - Least Severe (1)	Troubleshooting, "Exhaust Temperature Is Low"
5697-1 Engine Exhaust Gas Port #12 Difference from Average Temperature : Data Low - Most Severe (3)

Table 2 is a list of the FMI numbers used with the SPN to provide more information that relates to the problem.

Table 2

FMI	Failure
00	Data is above the normal range.
01	Data is below the normal range.
02	Incorrect signal
03	Voltage is above the normal range.
04	Voltage is below the normal range.
05	Current is below the normal range.
06	Current is above the normal range.
08	Abnormal signal
09	Abnormal update
12	A device or a component failed.
13	A component is out of calibration.
14	Special instructions
15	Data valid but above normal operating range - Least severe level.
16	Data valid but above normal operating range - Moderately severe level.
17	Data valid but below normal operating range - Least severe level.
18	Data valid but below normal operating range - Moderately severe level.
21	Data drift low
31	Condition exists

Active Diagnostic Codes

An active diagnostic code represents a problem with the electronic control system. Correct the problem as soon as possible.

When the engine ECM generates an active diagnostic code, the "Active Alarm" indicator ("Engine Control Alarm Status" turns on. Cat ET) is activated to alert the operator. If the condition that generated the code is momentary, the message disappears from the list of active diagnostic codes. The diagnostic code becomes logged.

Logged Diagnostic Codes

When the ECM generates a diagnostic code, the ECM logs the code in permanent memory. The ECM has an internal diagnostic clock. Each ECM will record the following information when a code is generated:

• The hour of the first occurrence of the code

• The hour of the last occurrence of the code

• The number of occurrences of the code

This information is a valuable indicator for troubleshooting intermittent problems.

A code is cleared from memory when one of the following conditions occur:

• The service technician manually clears the code.

• The code does not recur for 100 hours.

• A new code is logged and there are already ten codes in memory. In this case, the oldest code is cleared.

Some diagnostic codes may be easily triggered. Some diagnostic codes may log occurrences that did not result in complaints. The most likely cause of an intermittent problem is a faulty connection or damaged wiring. The next likely cause is a component failure. The least likely cause is the failure of an electronic module. Diagnostic codes that are logged repeatedly may indicate a problem that needs special investigation.

Note: Always clear logged diagnostic codes after investigating and correcting the problem which generated the code.