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P2177 Diagnostic Trouble Code Discussion for June 2011

Fuel System Too Lean At Off Idle (Bank 1)

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Trouble Ticket Help Requests for DTC P2177
Help Request Posted
2007 Audi A4 Quattro 2.0L Poor Idle Quality, MIL Lamp on VIN: WAUDF78E67
P2177: System too lean. After installing the new crankcase pressure regulating valve (06F 129 101P) which was an update from the original 06F 129 101E, WE STILL had the same codes and same symptoms of rough idle. We assumed it was a faulty part and sent for another (P) part with the...
June 15, 2011