Mechanics

AUDI A4 SENSOR PROBLEM

2006 Audi A4 • 60,000 miles

I have a po171 code. Possible causes.
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Guest
November 18, 2012.



P0171 – System too Lean (Bank 1) where cylinder no.1 side-Could be a dirty MAF sensor, Front oxygen sensor, vacuum leak, EGR valve, weak fuel pump and faulty injector/s

Rasmataz
Nov 18, 2012.