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Re: 2009 Audi A4 P0171
Posted to Technical Discussion Forum on 12/11/2012 2 Replies

Take the vin number and call your local dealer. Ask if the car has any open bulletins. Mainly the one for the crankcase regulating valve. If the bulletin has not been performed then sublet to your local dealer and have all the updates done. We had a similar on... Login to read more.

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