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P2177 Diagnostic Trouble Code Discussion for May 2015

Fuel System Too Lean At Off Idle (Bank 1)

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Trouble Ticket Help Requests for DTC P2177
Help Request Posted
2010 Audi A4 Quattro 2.0L MIL Lamp on VIN: WAUBFAFL0A
P2177: lean off idle. had additional lean codes and fuel pressure range codes previous p119a, p0506, p12a2. also excessive vacuum in crankcase and long term trim at +70. smoke test negative. replaced oil separator/breather on valve cover and that took care of crankcase vacuum and b...
May 01, 2015