Check Engine Light due to catalytic converter faults on Volkswagen Passat W8

Check Engine Light illumination can be related to catalytic converter faults, which will require a re-flash of the ECM or replacement of the catalytic converter.

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Average mileage: (–)
Exhaust & Emissions affected: 4.0L V8
1 model year affected: 2004
1 person reported this problem
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