P2177 Diagnostic Trouble Code Discussion for February 2019
Fuel System Too Lean At Off Idle (Bank 1)
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| Help Request | Posted | |
| 2009 Volkswagen Jetta SE 2.5L MIL Lamp on VIN: 3VWRZ71K89 P2177: System Too Lean Off Idle. ... EVAP small leak and P2177 System Too Lean Off Idle. Purge valve test with vacuum pump showed valve not closing tight. Replaced purge valve. Thought maybe P2177 could be related. It's not. P2177 came back soon. STFT ranging +1.6% to -1.6% at idle. Of... |
February 18, 2019 |
