PISTON GROUP (standard) 9N3744 - Caterpillar

Table 1
Diagnostic Trouble Code for Diesel Particulate Filter (DPF) Active Regeneration Interrupted
J1939 Code Description Notes
5319-31 Aftertreatment 1 Diesel Particulate Filter Incomplete Regeneration The Electronic Control Module (ECM) has interrupted an active regeneration.
The maximum duration for an active regeneration has been exceeded three times.
If equipped, the warning lamp will flash. The engine will be derated. The ECM will log the diagnostic code.
The code will become inactive once a successful active regeneration has occurred. Perform the following steps:Recommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in order.
Table 2
Troubleshooting Test Steps Values Results
1. Diagnostic Codes
A. Establish communication between the electronic service tool and the Electronic Control Module (ECM).
B. Check for active diagnostic codes.
Codes
Result: A diagnostic trouble code is active or logged.
Troubleshoot any diagnostic codes that could have caused an unsuccessful regeneration before continuing with this procedure.
Result: A diagnostic trouble code is not active or logged.
Proceed to Test Step 2.
2. Insulation on the Exhaust Duct (If Equipped)
A. Check the insulation on the exhaust duct between the engine and the Clean Emissions Module (CEM). Make sure that insulation is not missing or damaged.
Insulation
Result: The insulation is missing or damaged.
Repair or replace the insulation on the exhaust duct.
Result: The insulation is OK.
Proceed to Test Step 3.
3. Exhaust Leaks
A. Thoroughly inspect the exhaust duct between the engine and the CEM for leaks. Ensure that all connections are secure and no leaks are present.
Exhaust leaks
Result: There are exhaust leaks.
Make the necessary repairs, Verify that the repair has eliminated the fault.
Result: The exhaust duct is OK.
Proceed to Test Step 4.
4. Manual Regeneration
A. Use one of the following methods to perform a manual regeneration:
The "Force Regeneration" switch on the application (if equipped)
The "Particulate Filter Forced Regeneration" on the electronic service tool
B. Use the electronic service tool to clear all logged diagnostic codes.
Complete regeneration
Result: The regeneration completed successfully and there are no active diagnostic codes.
Return the engine to service.
Result: The regeneration did not complete successfully.
Contact the Dealer Solution Network (DSN).