Cross-Reference Information for Diagnostic Codes
Table 1 is a list of the diagnostic codes for the engine. The diagnostic codes are cross-referenced with the appropriate procedure that can be used to troubleshoot the code.
Further explanations of diagnostic codes are explained after Table 1.
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.
Cross-Reference from Diagnostic Trouble Codes to Functional Test or Procedure | |
---|---|
J1939 Code and Description | Troubleshooting Procedure |
29-8
Accelerator Pedal Position #2 : Abnormal Frequency, Pulse Width, or Period |
Troubleshooting, "Speed Control - Test" |
52-3
Engine Intercooler Temperature : Voltage Above Normal |
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" |
52-4
Engine Intercooler Temperature : Voltage Below Normal |
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" |
91-8
Accelerator Pedal Position #1 : Abnormal Frequency, Pulse Width, or Period |
Troubleshooting, "Speed Control - Test"
OR Troubleshooting, "Direct Fuel Control Mode - Test" |
95-2
Engine Fuel Filter Differential Pressure : Erratic, Intermittent, or Incorrect |
The 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 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 |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
101-3
Engine Crankcase Pressure : Voltage Above Normal |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
101-4
Engine Crankcase Pressure : Voltage Below Normal |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
105-3
Engine Intake Manifold #1 Temperature : Voltage Above Normal |
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" |
105-4
Engine Intake Manifold #1 Temperature : Voltage Below Normal |
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" |
108-3
Barometric Pressure : Voltage Above Normal |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
108-4
Barometric Pressure : Voltage Below Normal |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
109-3
Engine Coolant Pressure : Voltage Above Normal |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
109-4
Engine Coolant Pressure : Voltage Below Normal |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
110-3
Engine Coolant Temperature : Voltage Above Normal |
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" |
110-4
Engine Coolant Temperature : Voltage Below Normal |
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" |
175-3
Engine Oil Temperature 1 : Voltage Above Normal |
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" |
175-4
Engine Oil Temperature 1 : Voltage Below Normal |
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" |
190-8
Engine Speed : Abnormal Frequency, Pulse Width, or Period |
Troubleshooting, "Speed/Timing - Test" |
625-9
Proprietary Data Link : Abnormal Update Rate |
Troubleshooting, "Data Link - Test" |
630-2
Calibration Memory : Erratic, Intermittent, or Incorrect |
Troubleshooting, "Configuration Parameters" |
631-2
Calibration Module : Erratic, Intermittent, or Incorrect |
Troubleshooting, "ECM Software - Install" |
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 |
Troubleshooting, "Injector Solenoid - Test" |
652-5
Engine Injector Cylinder #02 : Current Below Normal |
Troubleshooting, "Injector Solenoid - Test" |
652-6
Engine Injector Cylinder #02 : Current Above Normal |
Troubleshooting, "Injector Solenoid - Test" |
653-5
Engine Injector Cylinder #03 : Current Below Normal |
Troubleshooting, "Injector Solenoid - Test" |
653-6
Engine Injector Cylinder #03 : Current Above Normal |
Troubleshooting, "Injector Solenoid - Test" |
654-5
Engine Injector Cylinder #04 : Current Below Normal |
Troubleshooting, "Injector Solenoid - Test" |
654-6
Engine Injector Cylinder #04 : Current Above Normal |
Troubleshooting, "Injector Solenoid - Test" |
655-5
Engine Injector Cylinder #05 : Current Below Normal |
Troubleshooting, "Injector Solenoid - Test" |
655-6
Engine Injector Cylinder #05 : Current Above Normal |
Troubleshooting, "Injector Solenoid - Test" |
656-5
Engine Injector Cylinder #06 : Current Below Normal |
Troubleshooting, "Injector Solenoid - Test" |
656-6
Engine Injector Cylinder #06 : Current Above Normal |
Troubleshooting, "Injector Solenoid - Test" |
657-5
Engine Injector Cylinder #07 : Current Below Normal |
Troubleshooting, "Injector Solenoid - Test" |
657-6
Engine Injector Cylinder #07 : Current Above Normal |
Troubleshooting, "Injector Solenoid - Test" |
658-5
Engine Injector Cylinder #08 : Current Below Normal |
Troubleshooting, "Injector Solenoid - Test" |
658-6
Engine Injector Cylinder #08 : Current Above Normal |
Troubleshooting, "Injector Solenoid - Test" |
659-5
Engine Injector Cylinder #09 : Current Below Normal |
Troubleshooting, "Injector Solenoid - Test" |
659-6
Engine Injector Cylinder #09 : Current Above Normal |
Troubleshooting, "Injector Solenoid - Test" |
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 |
Troubleshooting, "Injector Solenoid - Test" |
662-5
Engine Injector Cylinder #12 : Current Below Normal |
Troubleshooting, "Injector Solenoid - Test" |
662-6
Engine Injector Cylinder #12 : Current Above Normal |
Troubleshooting, "Injector Solenoid - Test" |
663-5
Engine Injector Cylinder #13 : Current Below Normal |
Troubleshooting, "Injector Solenoid - Test" |
663-6
Engine Injector Cylinder #13 : Current Above Normal |
Troubleshooting, "Injector Solenoid - Test" |
664-5
Engine Injector Cylinder #14 : Current Below Normal |
Troubleshooting, "Injector Solenoid - Test" |
664-6
Engine Injector Cylinder #14 : Current Above Normal |
Troubleshooting, "Injector Solenoid - Test" |
665-5
Engine Injector Cylinder #15 : Current Below Normal |
Troubleshooting, "Injector Solenoid - Test" |
665-6
Engine Injector Cylinder #15 : Current Above Normal |
Troubleshooting, "Injector Solenoid - Test" |
666-5
Engine Injector Cylinder #16 : Current Below Normal |
Troubleshooting, "Injector Solenoid - Test" |
666-6
Engine Injector Cylinder #16 : Current Above Normal |
Troubleshooting, "Injector Solenoid - Test" |
677-5
Engine Starter Motor Relay : Current Below Normal |
Troubleshooting, "Starting - Test" |
677-6
Engine Starter Motor Relay : Current Above Normal |
Troubleshooting, "Starting - Test" |
678-3
ECU 8 Volts DC Supply : Voltage Above Normal |
Troubleshooting, "Sensor Supply - Test" |
678-4
ECU 8 Volts DC Supply : Voltage Below Normal |
Troubleshooting, "Sensor Supply - Test" |
723-8
Engine Speed Sensor #2 : Abnormal Frequency, Pulse Width, or Period |
Troubleshooting, "Speed/Timing - Test" |
1188-5
Engine Turbocharger 1 Wastegate Drive : Current Below Normal |
Troubleshooting, "Solenoid Valve - Test" |
1188-6
Engine Turbocharger 1 Wastegate Drive : Current Above Normal |
Troubleshooting, "Solenoid Valve - Test" |
1203-3
Engine Auxiliary Coolant Pressure : Voltage Above Normal |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
1203-4
Engine Auxiliary Coolant Pressure : Voltage Below Normal |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
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 |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
1231-9
J1939 Network #2 : Abnormal Update Rate |
Troubleshooting, "Data Link - Test" |
1231-14
J1939 Network #2 : Special Instruction |
Troubleshooting, "Data Link - Test" |
2813-5
Engine Air Shutoff Command Status : Current Below Normal |
Troubleshooting, "Solenoid Valve - Test" |
2813-6
Engine Air Shutoff Command Status : Current Above Normal |
Troubleshooting, "Solenoid Valve - Test" |
3509-3
Sensor Supply Voltage 1 : Voltage Above Normal |
Troubleshooting, "Sensor Supply - Test" |
3509-4
Sensor Supply Voltage 1 : Voltage Below Normal |
Troubleshooting, "Sensor Supply - Test" |
3510-3
Sensor Supply Voltage 2 : Voltage Above Normal |
Troubleshooting, "Sensor Supply - Test" |
3510-4
Sensor Supply Voltage 2 : Voltage Below Normal |
Troubleshooting, "Sensor Supply - Test" |
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 |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
4210-5
Engine Pre-lube Drive : Current Below Normal |
Troubleshooting, "Prelubrication - Test" |
4210-6
Engine Pre-lube Drive : Current Above Normal |
Troubleshooting, "Prelubrication - Test" |
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 |
Troubleshooting, "Sensor Signal (Analog, Active) - 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 |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
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. Caterpillar Electronic Technician (ET) is a software program that runs on a personal computer. The software can be used by the service technician to view the diagnostic code information for an ECM. The diagnostic code will be displayed as 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 to identify data.
Failure Mode Identifier (FMI) - The FMI indicates the type of failure.
Refer to Table 1 for a complete list of the diagnostic codes and the appropriate troubleshooting procedure.
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".
Illustration 1 is an example of the operating range of a sensor.
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. An event code will be generated for the monitored parameter. The sensor circuit does not have an electronic problem. Refer to Troubleshooting, "Event Codes" for additional information on event codes. (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. |
An active diagnostic code represents a problem with the electronic control system. Correct the problem as soon as possible.
When the ECM generates an active diagnostic code. The "Active Alarm" indicator ("Control Alarm Status" 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.
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.