Engine Controls - MIL ON/DTC's P0420/P0430 Set

01 11 10

August 8, 2011

2026254





Vehicle Information

Condition

Update Programming MIL ON DTCs P0420 and P0430 Stored in ECM Fault Memory





One or more of the following fault codes may be stored in the ECM Fault Memory:

Technical Background

Monitoring strategy for the catalyst monitoring is too sensitive causing P0420 and or P0430 faults to incorrectly set in the engine control module.

Updated programming of the ECM software is based on most recent engineering experiences and makes this knowledge available for the monitoring strategies.

Production Solution

No improvements were made in the vehicle production period.

Service

Update-Programming Procedure:





Tip and Note








Update the Engine Control Module using the SVM Unit code as listed in the table shown.








Warranty

Required Parts and Tools





No Special Parts required.

Additional Information

All part and service references provided in this Technical Bulletin are subject to change and/or removal. Always check with your Parts Dept. and Repair Manuals for the latest information.





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