Q7 4.2 FSI PCV Valve Failure: High Pitch Whistling Noise

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08-07-2014, 07:36 PM

zao177

1st Gear

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Join Date: Aug 2014

Posts: 1

Q7 4.2 FSI PCV Valve Failure: High Pitch Whistling Noise

[Issues]
-High pitch whistling noise: Idling~2,000rpm
-P0174 P0171 Bank System Too Lean

[Root Cause]
PCV Valve Failure

[Replaced Part]
Part#: 079103464D

[PCV Valve Diagnosis]

Pictures:
https://drive.google.com/folderview?...FE&usp=sharing

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