P0131 Diagnostic Trouble Code Discussion for February 2012
Air Fuel Sensor (Bank 1 Sensor 1) Circuit Low Input (Lean Shift)
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| Help Request | Posted | |
| 1998 Ford Expedition Eddie Bauer 5.4L Poor Idle Quality VIN: 1FMPU18L1W P0131: HO2S Sensor circuit out of range low voltage B1S1. The vehicle came in with a "Check Engine" light on. Old friends of the Bosses'. This code was a, "Lean B1S1". The boss talks the person into buying plugs and boots and we'll install them. No other complaints at this time,(Very Important Later).... |
February 07, 2012 |
