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P1151 Diagnostic Trouble Code Discussion for May 2012

Electronic Throttle System Sub Accelerator Position Sensor 2 Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1151
Help Request Posted
1997 Ford Windstar GL 3.8L MIL Lamp on VIN: 2FMDA5143V
P1151: Lack of HO2S-21 Sensor indicates lean. ... that replaced the head gaskets and could not get the code to stay off to pass inspection. When it came to my shop it had code P1151 so the first thing I did was smoke the intake and found a leak around cyl# 4 port, removed intake and resealed and resmoked ...
May 04, 2012
2003 Ford E-150 4.2L Poor Idle Quality, Hesitation VIN: 1FTRE14283
P1151: o2 12 lean limit. Vehicle came in with no power, misfire...tested and found cyl one and two intake valves melted so bad that they had pulled up into the head. removed both heads and sent to machine shop for checking, planing and valves and guides. after putting this all back to...
May 14, 2012