Audi A4 P0171
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A4 B6 - P0171 and Throttle Flutter - AudiForums.com
Audi B6 A4 Check Engine Light P0171 & P0174 Solution FIX (2001-2006
New to the Audi World/ P0171 Code driving me nuts - AudiWorld Forums
Codes P0507 and P0171: I Have a B4 Audi A4 Quattro. I Have a CEL
Audi A4 Running Rough P0171 P0507 P2279 Multi Misfire
Audi A4 2.0T P0171 System Too Lean P2187 P2279
p0171 - AudiForums.com
Q&A: Audi A4 2.0T Engine Diagram & P0171 Code Explanation
Codes P0507 and P0171: I Have a B4 Audi A4 Quattro. I Have a CEL