P2177 Diagnostic Trouble Code Discussion for September 2012
Fuel System Too Lean At Off Idle (Bank 1)
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| Help Request | Posted | |
| 2004 BMW 745Li 4.4L MIL Lamp on VIN: WBAGN63534 P2177: Multiplicative mixture too lean bank 1. Vehicle came in with CEL, found above codes. Checked fuel pressure, found 2.5BAR, spec 3.5BAR. Replaced fuel pump and filter, fuel pressure improved slightly to 2.8BAR, codes return. Replaced MAF, no change. Substituted known good SBSR from another car without... |
September 28, 2012 |
