Review Of 2001 Audi A6 4.2 Check Engine Light References. Recently i saw the engine check light on. Web i just purchased a used 2001 a6 2.7t.

Whereas a steady check engine light may mean you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light. Both secondary air injection pump and relay errors. Audi a6 quattro exhaust and emissions