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

01 MIL on (P0420/P0430 Catalyst System, Bank 1/2 Efficiency Below Threshold incorrectly stored in ECM)

23 11 27

2027122/1

September 6, 2011.





Affected Vehicles

Condition

^ MIL on.

^ DTC for P0420 and/or P0430 "Catalyst System, Efficiency Below Threshold" incorrectly stored in ECM.

Technical Background

Software update needed in order to avoid unnecessary Catalyst replacement.

Production Solution

Not Applicable.

Service

1. Follow all instructions in the attached TSB 2011732 00 Software Version Management (SVM), operating instructions.





2. Update the ECM using the SVM action code as listed in the table above if necessary.





Warranty

Additional Information

The following Technical Service Bulletin will be necessary to complete this procedure:

^ TSB 2011732, 00 Software Version Management (SVM), operating instructions

All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information.

Attachment


























^ TSB 2011732, 00 Software Version Management (SVM), operating instructions