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P0151 Diagnostic Trouble Code Discussion for February 2012

Air Fuel Sensor (Bank 2 Sensor 1) Circuit Low Input (Lean Shift)

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Trouble Ticket Help Requests for DTC P0151
Help Request Posted
1998 Ford Expedition Eddie Bauer 5.4L Poor Idle Quality VIN: 1FMPU18L1W
P0151: HO2S Sensor circuit out of range low voltage B2S1. 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