Engine Controls - MIL ON/DTC's P0300-P0306/P0420 Set
01 08 22Aug. 27, 2008
2018669
Vehicle Information
Update Programming, MIL ON, DTCs P0420 and/or P0300 P0306 Stored in ECM Fault Memory
One or more of the fault codes may be stored in ECM Fault Memory
Condition
Technical Background
Monitoring strategy for catalytic converter is too sensitive causing unnecessary catalytic converter replacements. Engine misfire diagnostic strategy is adjusted for better catalyst protection. Updated programming
of the ECM software is based on most recent engineering experiences and makes this knowledge available for the monitoring strategy.
Production Solution
No production change required.
Service
Update Programming Procedure
Warranty
The procedure can be found in GFF under Functions/ Component Selection, Software Version Management, Adapting Software.
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.