P2177 Diagnostic Trouble Code Discussion for December 2017
Fuel System Too Lean At Off Idle (Bank 1)
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| Help Request | Posted | |
| 2013 Audi A4 Quattro 2.0L MIL Lamp on VIN: WAUFFAFL6D P2177: . With the mass air flow sensor unpluged the fuel trims come down. Tried it a few times to make sure it wasn't a fluke. Just need to know if this is a valid test on this car. |
December 28, 2017 |
