The Electronic Control Module (ECM) monitors the operating parameters of the engine. The ECM will generate an event code if a specific engine parameter exceeds an acceptable range that is defined by the engine monitoring system. For information on the engine monitoring system, refer to Troubleshooting, "Engine Monitoring System".
Cross-Reference Information for Event Codes
Event codes are generated when abnormal operating conditions exist. Table 1 is a list of the event codes for the engine. The event codes are cross-referenced with the appropriate procedure that can be used to troubleshoot the code.
Cross-Reference from Diagnostic Trouble Codes to Functional Test or Procedure | ||
---|---|---|
J1939 Code and Description | CDL Code and Description | Troubleshooting Procedure |
173-1
Engine Exhaust Gas Temperature : Low - most severe (3) |
E1691 (3)
Low Exhaust Temperature |
Hydrocarbon Loading of the aftertreatment catalyst has reached 140 percent. Refer to the Operation and Maintenance Manual, "Engine Operation (Hydrocarbon Release Procedure)". |
173-18
Engine Exhaust Gas Temperature : Low - moderate severity (2) |
E1691 (2)
Low Exhaust Temperature |
Hydrocarbon Loading of the aftertreatment catalyst has reached 100 percent. Refer to the Operation and Maintenance Manual, "Engine Operation (Hydrocarbon Release Procedure)". |
1761-15
Aftertreatment #1 DEF Tank Volume : High - least severe (1) |
N/A | Troubleshooting, "DEF Tank Level is High" |
1761-17
Aftertreatment #1 DEF Tank Volume : Low - least severe (1) |
E954 (1)
Low Aftertreatment #1 DEF Tank #1 Level |
Troubleshooting, "DEF Tank Level is Low" |
2434-1
Engine Exhaust Manifold Bank #1 Temperature #1 : Low - most severe (3) |
E324 (3)
Low Right Exhaust Temperature |
Hydrocarbon Loading of the aftertreatment catalyst has reached 140 percent. Refer to the Operation and Maintenance Manual, "Engine Operation (Hydrocarbon Release Procedure)". |
2434-18
Engine Exhaust Manifold Bank #1 Temperature #1 : Low - moderate severity (2) |
E324 (2)
Low Right Exhaust Temperature |
Hydrocarbon Loading of the aftertreatment catalyst has reached 100 percent. Refer to the Operation and Maintenance Manual, "Engine Operation (Hydrocarbon Release Procedure)". |
3216-7
Aftertreatment #1 Intake NOx : Not Responding Properly |
E1431 (2)
Invalid Aftertreatment #1 Intake NOx Level #1 |
Troubleshooting, "NOx Sensor - Test" |
3217-16
Aftertreatment #1 Intake O2 : High - moderate severity (2) |
E1407 (2)
High Aftertreatment #1 Outlet O2 Concentration |
Troubleshooting, "Clean Emissions Module Has High Oxygen Level" |
3226-7
Aftertreatment #1 Outlet NOx : Not Responding Properly |
E1432 (2)
Invalid Aftertreatment #1 Outlet NOx Level #1 |
Troubleshooting, "NOx Sensor - Test" |
3227-16
Aftertreatment #1 Outlet O2 : High - moderate severity (2) |
E1408 (2)
High Aftertreatment #1 Intake O2 Concentration |
Troubleshooting, "Clean Emissions Module Has High Oxygen Level" |
3360-31
Aftertreatment #1 DEF Controller |
E1040 (2)
ARD Manually Disabled |
The "Aftertreatment System Enable Status" has been switched to "Disabled" using Cat® Electronic Technician (ET). |
3362-31
Aftertreatment #1 DEF Dosing Unit Input Lines |
E114 (2)
Aftertreatment #1 DEF Dosing Unit Input Lines Not Purged |
Troubleshooting, "DEF Does Not Purge" |
3516-16
Aftertreatment #1 DEF Concentration : High - moderate severity (2) |
E1365 (2)
High Aftertreatment #1 DEF Concentration |
Troubleshooting, "NOx Conversion Is Low" |
3516-18
Aftertreatment #1 DEF Concentration : Low - moderate severity (2) |
E1364 (2)
Low Aftertreatment #1 DEF Concentration |
Troubleshooting, "NOx Conversion Is Low" |
4332-11
Aftertreatment #1 SCR System #1 State : Other Failure Mode |
E1305 (1)
Initial Assembly Aftertreatment #1 Procedure Required |
The aftertreatment system has been fitted to the engine for the first time. The engine must be ran until the Selective Catalyst Reduction (SCR) system doses Diesel Exhaust Fluid (DEF) into the exhaust for 5 minutes. The "Aftertreatment System State" parameter in the status screen must read "Normal Dosing" for 5 minutes to clear the code. An "Aftertreatment System Functional Test" can also be performed with Cat ET to clear the code. |
4335-15
Aftertreatment #1 SCR Dosing Air Assist Absolute Pressure : High - least severe (1) |
N/A | Troubleshooting, "Air Assist Pressure Is High" |
4335-17
Aftertreatment #1 SCR Dosing Air Assist Absolute Pressure : Low - least severe (1) |
E964 (1)
Low Aftertreatment #1 DEF Dosing Atomization Air Assist Pressure |
Troubleshooting, "Air Assist Pressure Is Low" |
4335-18
Aftertreatment #1 SCR Dosing Air Assist Absolute Pressure : Low - moderate severity (2) |
E964 (2)
Low Aftertreatment #1 DEF Dosing Atomization Air Assist Pressure |
Troubleshooting, "Air Assist Pressure Is Low" |
4360-0
Aftertreatment #1 SCR Catalyst Intake Gas Temperature : High - most severe (3) |
E946 (3)
High Aftertreatment #1 SCR Catalyst Intake Gas Temperature |
Troubleshooting, "SCR Catalyst Temperature Sensor - Test" |
4360-15
Aftertreatment #1 SCR Catalyst Intake Gas Temperature : High - least severe (1) |
E946 (1)
High Aftertreatment #1 SCR Catalyst Intake Gas Temperature |
Troubleshooting, "SCR Catalyst Temperature Sensor - Test" |
4360-16
Aftertreatment #1 SCR Catalyst Intake Gas Temperature : High - moderate severity (2) |
E946 (2)
High Aftertreatment #1 SCR Catalyst Intake Gas Temperature |
Troubleshooting, "SCR Catalyst Temperature Sensor - Test" |
4360-17
Aftertreatment #1 SCR Catalyst Intake Gas Temperature : Low - least severe (1) |
E947 (1)
Low Aftertreatment #1 SCR Catalyst Intake Gas Temperature |
Troubleshooting, "SCR Catalyst Temperature Sensor - Test" |
4363-0
Aftertreatment #1 SCR Catalyst Outlet Gas Temperature : High - most severe (3) |
E950 (3)
High Aftertreatment #1 SCR Catalyst Outlet Gas Temperature |
Troubleshooting, "SCR Catalyst Temperature Sensor - Test" |
4363-15
Aftertreatment #1 SCR Catalyst Outlet Gas Temperature : High - least severe (1) |
E950 (1)
High Aftertreatment #1 SCR Catalyst Outlet Gas Temperature |
Troubleshooting, "SCR Catalyst Temperature Sensor - Test" |
4363-16
Aftertreatment #1 SCR Catalyst Outlet Gas Temperature : High - moderate severity (2) |
E950 (2)
High Aftertreatment #1 SCR Catalyst Outlet Gas Temperature |
Troubleshooting, "SCR Catalyst Temperature Sensor - Test" |
4363-17
Aftertreatment #1 SCR Catalyst Outlet Gas Temperature : Low - least severe (1) |
E951 (1)
Low Aftertreatment #1 SCR Catalyst Outlet Gas Temperature |
Troubleshooting, "SCR Catalyst Temperature Sensor - Test" |
4364-2
Aftertreatment #1 SCR Catalyst Conversion Efficiency : Erratic, Intermittent, or Incorrect |
E1410 (2)
Invalid Aftertreatment #1 SCR Conversion Efficiency |
The SCR outlet NOx sensor detected a higher level of NOx than the SCR inlet NOx sensor. The wiring harness connectors are swapped. |
4364-17
Aftertreatment #1 SCR Catalyst Conversion Efficiency : Low - least severe (1) |
E1309 (1)
Low Aftertreatment #1 SCR Catalyst Conversion Efficiency |
Troubleshooting, "NOx Conversion Is Low" |
4364-18
Aftertreatment #1 SCR Catalyst Conversion Efficiency : Low - moderate severity (2) |
E1309 (2)
Low Aftertreatment #1 SCR Catalyst Conversion Efficiency |
Troubleshooting, "NOx Conversion Is Low" |
4367-1
Aftertreatment #1 DEF Tank #2 Level : Low - most severe (3) |
E955 (3)
Low Aftertreatment #1 DEF Tank #2 Level |
Troubleshooting, "DEF Tank Level is Low" |
4367-17
Aftertreatment #1 DEF Tank #2 Level : Low - least severe (1) |
E955 (1)
Low Aftertreatment #1 DEF Tank #2 Level |
Troubleshooting, "DEF Tank Level is Low" |
4367-18
Aftertreatment #1 DEF Tank #2 Level : Low - moderate severity (2) |
E955 (2)
Low Aftertreatment #1 DEF Tank #2 Level |
Troubleshooting, "DEF Tank Level is Low" |
4367-31
Aftertreatment #1 DEF Quick Thaw Tank Level |
E1589 (2)
Aftertreatment #1 DEF Tank Refill Not Responding to Command |
Troubleshooting, "DEF Tank Level is Low" |
4368-1
Aftertreatment #1 DEF Tank #2 Temperature : Low - most severe (3) |
E1399 (3)
Low Aftertreatment #1 DEF Tank #2 Temperature |
Troubleshooting, "DEF Tank Temperature Is Low" |
4368-15
Aftertreatment #1 DEF Tank #2 Temperature : High - least severe (1) |
E961 (1)
High Aftertreatment #1 DEF Tank #2 Temperature |
Troubleshooting, "DEF Tank Temperature Is High" |
4368-17
Aftertreatment #1 DEF Tank #2 Temperature : Low - least severe (1) |
E1399 (1)
Low Aftertreatment #1 DEF Tank #2 Temperature |
Troubleshooting, "DEF Tank Temperature Is Low" |
4368-18
Aftertreatment #1 DEF Tank #2 Temperature : Low - moderate severity (2) |
E1399 (2)
Low Aftertreatment #1 DEF Tank #2 Temperature |
Troubleshooting, "DEF Tank Temperature Is Low" |
6797-7
Aftertreatment #1 SCR Intake Absolute Pressure : Not Responding Properly |
E1723 (1)
Aftertreatment #1 DEF Doser #1 Pressure Not Responding To Command |
Troubleshooting, "SCR Catalyst Inlet Pressure Is Low" |
6797-16
Aftertreatment #1 SCR Intake Absolute Pressure : High - moderate severity (2) |
E1476 (2)
High Aftertreatment #1 SCR Catalyst Intake Pressure |
Troubleshooting, "SCR Catalyst Inlet Pressure Is High" |
6797-18
Aftertreatment #1 SCR Intake Absolute Pressure : Low - moderate severity (2) |
E1637 (2)
Low Aftertreatment #1 SCR Catalyst Intake Pressure |
Troubleshooting, "SCR Catalyst Inlet Pressure Is Low" |
6806-14
ECU Interface Mismatch : Special Instruction |
E1132 (2)
Inconsistent Configuration Detected |
Troubleshooting, "Data Link Configuration Status - Test" |
6875-16
Aftertreatment #1 DEF Dosing Pressure : High - moderate severity (2) |
E930 (1)
High Aftertreatment #1 DEF Pressure |
Troubleshooting, "DEF Pressure Is High" |
6875-18
Aftertreatment #1 DEF Dosing Pressure : Low - moderate severity (2) |
E931 (1)
Low Aftertreatment #1 DEF Pressure |
Troubleshooting, "DEF Pressure Is Low" |
7417-2
Aftertreatment #1 DEF Controller : Erratic, Intermittent, or Incorrect |
E1607 (2)
Aftertreatment #1 DEF Control Module Circuit Breaker Open |
Troubleshooting, "DEF Pump Power Supply - Test" |
An active event code represents a problem with engine operation. Correct the problem as soon as possible.
Active event codes are listed in ascending numerical order. The code with the lowest number is listed first.
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. (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. Refer to Troubleshooting, "Diagnostic Trouble Codes" for additional information on diagnostic codes. |
When the ECM generates an event code, the ECM may log the event code in permanent memory. The ECM has an internal diagnostic clock. The ECM will record the following information when an event 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
Logged events are listed in chronological order. The most recent event code is listed first.
This information can be helpful for troubleshooting intermittent problems. Logged codes can also be used to review the performance of the engine.
A code is cleared from memory when one of the following conditions occur:
- 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.
- The service technician manually clears the code.
Always clear logged event codes after investigating and correcting the problem which generated the code.
To troubleshoot the engine, perform the following steps to diagnose a malfunction:
- Obtain the following information about the complaint:
- The event and the time of the event
- Determine the conditions for the event. The conditions will include the engine rpm and the load.
- Determine if there are any systems that were installed by the dealer or by the customer that could cause the event.
- Determine whether any additional events occurred.
- Verify that the complaint is not due to normal engine operation. Verify that the complaint is not due to error of the operator.
- Narrow the probable cause. Consider the operator information, the conditions of operation, and the history of the engine.
- Perform a visual inspection. Inspect the following items:
- Fuel supply
- Oil level
- Oil supply
- Wiring
- Connectors
Be sure to check the connectors. This check is important for problems that are intermittent. Refer to Troubleshooting, "Electrical Connectors - Inspect" for additional information.
If these steps do not resolve the problem, refer to Table 1 for the procedure to troubleshoot the event code.