Emissions Service Action Circular (VR6 Engine Update ECM Software for Catalytic Converter Monitoring...
Volkswagen technical service bulletin Campaign Circula for 1999-2002 Volkswagen Jetta, 1999-2002 Volkswagen GTI and 1999-2002 Volkswagen Golf.
- Bulletin number
- Campaign Circula
- Component
- Engine and engine cooling
- Summary
- Emissions Service Action Circular (VR6 Engine Update ECM Software for Catalytic Converter Monitoring System): The ECM software for the catalytic converter monitoring system is too sensitive. This can cause the MIL to come on, and some vehicles may exceed Federal and/or California emissions standards. Also, in some cases this leads to unnecessary catalytic converter replacement. The corrective action taken for this issue was to Update ECM software.
Owners of these vehicles have filed 526 complaints in the engine category.
Vehicles covered
- Volkswagen Jetta 1999-2002 1999200020012002
- Volkswagen GTI 1999-2002 1999200020012002
- Volkswagen Golf 1999-2002 1999200020012002
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