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International Automotive Technicians Network
Re: 2009 Audi A4 P0171
Posted to Technical Discussion Forum on 12/12/2012

Thanks for the advice. I couldn't find any TSB's related to the code except for contaminated fuel??? I don't believe that is the problem. I'm going to smoke the intake and look for leaks first and if nothing, I am going to investigate the crankcase pressure co... Login to read more.