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P1131 Diagnostic Trouble Code Discussion for January 2008

Heated Oxygen Sensor (Bank 1 Sensor 1) Indicates A/F Ratio Too Lean

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Trouble Ticket Help Requests for DTC P1131
Help Request Posted
2002 Ford Taurus LX 3.0L MIL Lamp on VIN: 1FAFP55S72
P1131: ho2s11 sensor indicates lean. rechecked all previos items, all ok, lt fuel trim -3, cannot duplicate problem at this time. ford techs, what am i missing ???
January 11, 2008
1998 Ford F-150 Lariat 4.6L Excessive Emissions, Poor Idle Quality, Cuts out, Stall VIN: 1FTZX18W8W
P1131: Manufacturer control fuel/air metering. Vehicle came in for a stall and excessive crank problem. When it did start there was a lot of fuel vapor coming out from the tailpipe. Our tech went ahead and replaced the Maf sensor, drove it and released it to the customer. Customer tried driving it and retu...
January 21, 2008