P0491 Diagnostic Trouble Code Discussion for September 2005
Secondary AIR System Insufficient Flow Detected (Bank 1)
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| Help Request | Posted | |
| 1999 BMW 750iL 5.4L MIL Lamp on VIN: WBAGJ0336X P0491: ECU error. BMW experts. This car came in with the above code. Customer says no driveability issues. I could not find any description of this code in Alldata or on this network. Does anyone know about this code and what the correction would be? Thanks for any help. |
September 30, 2005 |
