I could hear a vacuum leak some where in the engine capartment, before I got the car looked at
Hi there,
As you know, this code points to an issue with a lean condition on bank 1. A vacuum leak will cause this. Here is some more info for you.
P0171 VOLKSWAGEN - System Too Lean Bank 1 Read more: https://www.autocodes.com/p0171_volkswagen.html
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