Over time and mileage and under certain conditions, the factory-installed catalysts may not perform as...
Audi technical service bulletin Circular - Emiss for 2008-2011 Audi A6, 2008 Audi A8 and 2008-2009 Audi S5 and others.
- Bulletin number
- Circular - Emiss
- Component
- Engine and engine cooling: exhaust system: emission control
- Summary
- Over time and mileage and under certain conditions, the factory-installed catalysts may not perform as required by Federal regulations. If the effectiveness of a catalyst is reduced, this may result in an increase in tailpipe emissions and the vehicle could fail to pass an emissions inspection.
Owners of these vehicles have filed 12 complaints in the engine category.
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