Diagnostic Trouble Codes
Table 1 is a list of the diagnostic codes for the aftertreatment system. 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. Contact SAE International to obtain a complete copy of SAE J1939DA_201607, the official definitive source of this standard.
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| J1939 Code and Description | CDL Code and Description | Troubleshooting Procedure |
|---|---|---|
| 168-3
Battery Potential / Power Input #1 : Voltage Above Normal |
168-3
Electrical System Voltage : Voltage Above Normal |
Troubleshooting, "Electrical Power Supply - Test" |
| 168-4
Battery Potential / Power Input #1 : Voltage Below Normal |
168-4
Electrical System Voltage : Voltage Below Normal |
Troubleshooting, "Electrical Power Supply - Test" |
| 630-2
Calibration Memory : Erratic, Intermittent, or Incorrect |
268-2
Programmed Parameter Fault : Erratic, Intermittent, or Incorrect |
Troubleshooting, "Configuration Parameters" |
| 631-2
Calibration Module : Erratic, Intermittent, or Incorrect |
253-2
Personality Module : Erratic, Intermittent, or Incorrect |
Troubleshooting, "ECM Software - Install" |
| 639-9
J1939 Network #1 : Abnormal Update Rate |
247-9
SAE J1939 Data Link : Abnormal Update Rate |
Troubleshooting, "Data Link - Test" |
| 639-14
J1939 Network #1 : Special Instruction |
247-14
SAE J1939 Data Link : Special Instruction |
Troubleshooting, "Data Link - Test" |
| 1231-9
SAE J1939 Data Link #2 : Abnormal Update Rate |
2348-9
SAE J1939 Data Link #2 : Abnormal Update Rate |
Troubleshooting, "Data Link - Test" |
| 1231-14
SAE J1939 Data Link #2 Special Instruction |
2348-14
SAE J1939 Data Link #2 Special Instruction |
Troubleshooting, "Data Link - Test" |
| 1235-9
J1939 Network #3 : Abnormal Update Rate |
5856-9
J1939 Network #3 Abnormal Update Rate |
Troubleshooting, "Data Link - Test" |
| 1235-14
J1939 Network #2 : Special Instruction |
5856-14
J1939 Network #3 : Special Instrucion |
Troubleshooting, "Data Link - Test" |
| 3216-11
Aftertreatment #1 Intake NOx : Other Failure Mode |
3655-11
Aftertreatment #1 Intake NOx Level Sensor : Other Failure Mode |
Troubleshooting, "Sensor (Data Link Type) - Test" |
| 3216-12
Aftertreatment #1 Intake NOx : Failure |
3655-12
Aftertreatment #1 Intake NOx Level Sensor : Failure |
Troubleshooting, "Sensor (Data Link Type) - Test" |
| 3226-11
Aftertreatment #1 Outlet NOx : Other Failure Mode |
3609-11
Aftertreatment #1 Outlet #1 NOx Level Sensor : Other Failure Mode |
Troubleshooting, "Sensor (Data Link Type) - Test" |
| 3226-12
Aftertreatment #1 Outlet NOx : Failure |
3609-12
Aftertreatment #1 Outlet #1 NOx Level Sensor : Failure |
Troubleshooting, "Sensor (Data Link Type) - Test" |
| 3360-3
Aftertreatment #1 DEF Controller #1: Voltage Normal |
3820-3
Aftertreatment #1 DEF Controller #1 : Voltage Above Normal |
Troubleshooting, "Electrical Power Supply - Test" |
| 3360-4
Aftertreatment #1 DEF Controller #1: Voltage Below Normal |
3820-4
Aftertreatment #1 DEF Controller #1 : Voltage Below Normal |
Troubleshooting, "Electrical Power Supply - Test" |
| 3360-9
Aftertreatment #1 DEF Controller #1: Abnormal Update Rate |
3820-9
Aftertreatment #1 DEF Controller #1 : Abnormal Update Rate |
Troubleshooting, "Data Link - Test" |
| 3360-12
Aftertreatment #1 DEF Controller #1: Failure |
3820-12
Aftertreatment #1 DEF Controller #1 : Failure |
Troubleshooting, "Sensor (Data Link Type) - Test" |
| 3361-5
Aftertreatment #1 DEF Pump #1 : Current Below Normal |
3102-5
Aftertreatment #1 DEF Pump #1 : Current Below Normal |
Troubleshooting, "Solenoid Valve - Test (Aftertreatment)" |
| 3361-6
Aftertreatment #1 DEF Pump #1 : Current Above Normal |
3102-6
Aftertreatment #1 DEF Pump #1 : Current Above Normal |
Troubleshooting, "Solenoid Valve - Test (Aftertreatment)" |
| 3361-7
Catalyst Dosing Unit : Not Responding Properly |
3102-7
Aftertreatment #1 Diesel Exhaust Fluid Dosing Valve Actuator : Not Responding Properly |
Troubleshooting, "DEF Module Does Not Respond" |
| 3509-3
Sensor Supply Voltage 1 : Voltage Above Normal |
262-3
5 Volt Sensor DC Power Supply : Voltage Below Normal |
Troubleshooting, "Sensor Supply - Test" |
| 3509-4
Sensor Supply Voltage 1 : Voltage Below Normal |
262-4
5 Volt Sensor DC Power Supply : Voltage Below Normal |
Troubleshooting, "Sensor Supply - Test" |
| 3510-3
Sensor Supply Voltage 2 : Voltage Above Normal |
2131-3
5 Volt Sensor DC Power Supply #2 : Voltage Above Normal |
Troubleshooting, "Sensor Supply - Test" |
| 3510-4
Sensor Supply Voltage 2 : Voltage Below Normal |
2131-4
5 Volt Sensor DC Power Supply #2 : Voltage Below Normal |
Troubleshooting, "Sensor Supply - Test" |
| 3511-11
Aftertreatment #1 Sensor Supply #1 : Other Failure Mode |
5067-11
Aftertreatment #1 Sensor Supply #1 : Other Failure Mode |
Troubleshooting, "DEF Pump Sensor Supply - Test" |
| 4334-3
Aftertreatment #1 DEF #1 Pressure (absolute) : Voltage Above Normal |
3090-3
Aftertreatment #1 DEF Pressure #1 Sensor : Voltage Above Normal |
Troubleshooting, "DEF Pump Pressure Sensor - Test" |
| 4334-4
Aftertreatment #1 DEF #1 Pressure (absolute) : Voltage Below Normal |
3090-4
Aftertreatment #1 DEF Pressure #1 Sensor : Voltage Below Normal |
Troubleshooting, "DEF Pump Pressure Sensor - Test" |
| 4334-7
Aftertreatment #1 DEF Pressure #1 Sensor : Not Responding Properly |
3090-7
Aftertreatment #1 DEF Pressure #1 Sensor : Not Responding Properly |
Troubleshooting, "DEF Pressure Is Low" |
| 4337-8
Aftertreatment #1 DEF Temperature #1 Sensor : Abnormal Frequency, Pulse Width, or Period |
3096-8
Aftertreatment #1 DEF Temperature #1 Sensor : Abnormal Frequency, Pulse Width, or Period |
Troubleshooting, "DEF Pump - Replace" |
| 4360-3
Aftertreatment #1 SCR Catalyst Intake Gas Temperature : Voltage Above Normal |
3105-3
Aftertreatment #1 SCR Catalyst Intake Gas Temperature Sensor : Voltage Above Normal |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
| 4360-4
Aftertreatment #1 SCR Catalyst Intake Gas Temperature : Voltage Below Normal |
3105-4
Aftertreatment #1 SCR Catalyst Intake Gas Temperature Sensor : Voltage Below Normal |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
| 4363-3
Aftertreatment #1 SCR Catalyst Outlet Gas Temperature : Voltage Above Normal |
3107-3
Aftertreatment #1 SCR Catalyst Outlet Gas Temperature Sensor : Voltage Above Normal |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
| 4363-4
Aftertreatment #1 SCR Catalyst Outlet Gas Temperature : Voltage Below Normal |
3107-4
Aftertreatment #1 SCR Catalyst Outlet Gas Temperature Sensor : Voltage Below Normal |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
| 4367-3
Aftertreatment #1 DEF Quick Thaw Tank Level : Voltage Above Normal |
3131-3
Aftertreatment #1 DEF Tank #2 Level Sensor : Voltage Above Normal |
Troubleshooting, "DEF Tank Sensor - Test" |
| 4367-4
Aftertreatment #1 DEF Quick Thaw Tank Level : Voltage Below Normal |
3131-4
Aftertreatment #1 DEF Tank #2 Level Sensor : Voltage Below Normal |
Troubleshooting, "DEF Tank Sensor - Test" |
| 4368-3
Aftertreatment #1 DEF Quick Thaw Tank Temperature Sensor : Voltage Above Normal |
3135-3
Aftertreatment #1 DEF Quick Thaw Tank Temperature Sensor : Voltage Above Normal |
Troubleshooting, "DEF Tank Sensor - Test" |
| 4368-4
Aftertreatment #1 DEF Quick Thaw Tank Temperature Sensor : Voltage Below Normal |
3135-4
Aftertreatment #1 DEF Quick Thaw Tank Temperature Sensor : Voltage Below Normal |
Troubleshooting, "DEF Tank Sensor - Test" |
| 4376-5
Aftertreatment #1 DEF Return Valve : Current Below Normal |
3862-5
Aftertreatment #1 Diesel Exhaust Fluid Return Valve Solenoid : Current Below Normal |
Troubleshooting, "Solenoid Valve - Test (Aftertreatment)" |
| 4376-6
Aftertreatment #1 DEF Return Valve : Current Above Normal |
3862-6
Aftertreatment #1 Diesel Exhaust Fluid Return Valve Solenoid : Current Above Normal |
Troubleshooting, "Solenoid Valve - Test (Aftertreatment)" |
| 4376-7
Aftertreatment #1 DEF Return Valve Solenoid : Not Responding Properly |
3862-7
Aftertreatment #1 DEF Return Valve Solenoid : Not Responding Properly |
Troubleshooting, "DEF Pump - Replace" |
| 5394-5
Aftertreatment #1 DEF Dosing Valve Actuator #1 : Current Below Normal |
3821-5
Aftertreatment #1 DEF Dosing Valve Actuator #1 : Current Below Normal |
Troubleshooting, "Solenoid Valve - Test (Aftertreatment)" |
| 5394-6
Aftertreatment #1 DEF Dosing Valve Actuator #1 : Current Above Normal |
3821-6
Aftertreatment #1 DEF Dosing Valve Actuator #1 : Current Above Normal |
Troubleshooting, "Solenoid Valve - Test (Aftertreatment)" |
| 5394-7
Aftertreatment #1 DEF Dosing Valve Actuator #1 : Not Responding Properly |
3821-7
Aftertreatment #1 DEF Dosing Valve Actuator #1 : Not Responding Properly |
Troubleshooting, "DEF Module Does Not Respond" |
| 5394-14
Aftertreatment #1 DEF Dosing Valve Actuator #1 : Special Instruction |
3821-14
Aftertreatment #1 DEF Dosing Valve Actuator #1 : Special Instruction |
Troubleshooting, "DEF Module Does Not Respond" |
| 5434-5
Aftertreatment #1 DEF Tank Refill Solenoid : Erratic, Intermittent, or Incorrect |
3605-5
Aftertreatment #1 DEF Tank Refill Solenoid : Erratic, Intermittent, or Incorrect |
Troubleshooting, "Solenoid Valve - Test (Aftertreatment)" |
| 5434-6
Aftertreatment #1 DEF Tank Refill Solenoid : Current Above Normal |
3605-6
Aftertreatment #1 DEF Tank Refill Solenoid : Current Above Normal |
Troubleshooting, "Solenoid Valve - Test (Aftertreatment)" |
| 5576-2
Aftertreatment #1 Identification : Erratic, Intermittent, or Incorrect |
3468-2
Aftertreatment #1 Identification Number Module : Erratic, Intermittent, or Incorrect |
Troubleshooting, "Aftertreatment Identification Module - Test" |
| 5576-8
Aftertreatment #1 Identification : Abnormal Frequency, Pulse Width, or Period |
3468-8
Aftertreatment #1 Identification Number Module : Abnormal Frequency, Pulse Width, or Period |
Troubleshooting, "Aftertreatment Identification Module - Test" |
| 5576-11
Aftertreatment #1 Identification Number Module : Other Failure Mode |
3468-11
Aftertreatment #1 Identification Number Module : Other Failure Mode |
Troubleshooting, "Aftertreatment Identification Module - Test" |
| 5576-14
Aftertreatment #1 Identification : Special Instruction |
3468-14
Aftertreatment #1 Identification Number Module : Special Instruction |
Troubleshooting, "Data Link Configuration Status - Test" |
| 5758-11
Aftertreatment #1 Intake NOx Level Sensor Power Supply : Other Failure Mode |
3781-11
Aftertreatment #1 Intake NOx Level Sensor Power Supply : Other Failure Mode |
Troubleshooting, "Electrical Power Supply - Test" |
| 5759-11
Aftertreatment #1 Outlet Gas Sensor Power Supply : Other Failure Mode |
3619-11
Aftertreatment #1 Outlet #1 NOx Level Sensor Power Supply : Other Failure Mode |
Troubleshooting, "Electrical Power Supply - Test" |
| 5965-5
Aftertreatment #1 DEF Controller Relay #1 : Current Below Normal |
3838-5
Aftertreatment #1 DEF Controller Relay #1 : Current Below Normal |
Troubleshooting, "Solenoid Valve - Test (Aftertreatment)" |
| 5965-6
Aftertreatment #1 DEF Controller Relay #1 : Current Above Normal |
3838-6
Aftertreatment #1 DEF Controller Relay #1 : Current Above Normal |
Troubleshooting, "Solenoid Valve - Test (Aftertreatment)" |
| 5966-5
Aftertreatment #1 DEF Controller #1 Power Supply #1 : Current Below Normal |
3965-5
Aftertreatment #1 DEF Controller #1 Power Supply #1 : Current Below Normal |
Troubleshooting, "DEF Control Module Power - Test" |
| 5966-6
Aftertreatment #1 DEF Controller #1 Power Supply #1 : Current Above Normal |
3965-6
Aftertreatment #1 DEF Controller #1 Power Supply #1 : Current Above Normal |
Troubleshooting, "DEF Control Module Power - Test" |
| 6309-5
Aftertreatment #1 DEF Controller #1 Power Supply #2 : Current Below Normal |
3966-5
Aftertreatment #1 DEF Controller #1 Power Supply #2 : Current Below Normal |
Troubleshooting, "DEF Control Module Power - Test" |
| 6309-6
Aftertreatment #1 DEF Controller #1 Power Supply #2 : Current Above Normal |
3966-6
Aftertreatment #1 DEF Controller #1 Power Supply #2 : Current Above Normal |
Troubleshooting, "DEF Control Module Power - Test" |
| 6797-3
Aftertreatment #1 SCR Intake Absolute Pressure : Voltage Above Normal |
4054-3
Aftertreatment #1 SCR Catalyst Intake Pressure Sensor : Voltage Above Normal |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
| 6797-4
Aftertreatment #1 SCR Intake Absolute Pressure : Voltage Below Normal |
4054-4
Aftertreatment #1 SCR Catalyst Intake Pressure Sensor : Voltage Below Normal |
Troubleshooting, "Sensor Signal (Analog, Active) - Test" |
| 6797-7
Aftertreatment #1 SCR Catalyst Intake Pressure Sensor : Not Responding Properly |
4054-7
Aftertreatment #1 SCR Catalyst Intake Pressure Sensor : Not Responding Properly |
Troubleshooting, "SCR Catalyst Inlet Pressure Is Low" |
| 7107-5
Aftertreatment #1 DEF Pump : Current Below Normal |
3118-5
Aftertreatment #1 DEF Pump Motor Speed Sensor : Current Below Normal |
Troubleshooting, "DEF Pump Motor - Test" |
| 7107-6
Aftertreatment #1 DEF Pump : Current Above Normal |
3118-6
Aftertreatment #1 DEF Pump Motor Speed Sensor : Current Above Normal |
Troubleshooting, "DEF Pump Motor - Test" |
| 7107-8
Aftertreatment #1 DEF Pump Motor Speed Sensor : Abnormal Frequency, Pulse Width, or Period |
3118-8
Aftertreatment #1 DEF Pump Motor Speed Sensor : Abnormal Frequency, Pulse Width, or Period |
Troubleshooting, "DEF Pump - Replace" |
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. Cat® 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.
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| |
| Illustration 1 | g01365757 |
|
Example of the typical operating range of a sensor (1) This area represents the normal operating range of the parameter. (2) In these areas, the aftertreatment system 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.
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