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P1131 Diagnostic Trouble Code Discussion for November 2005

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 E-150 Econoline 4.2L MIL Lamp on VIN: 1FTRE14212
P1131: Lack of HO2S B1S1 Sw Indicates Lean. Hello All I have ran into two of these vans in the last two days with high mileage and same codes. Both vans have NO drivibility problems associated with these codes other than a check engine light on. Both vehicles have had new MAFs, both front O2 sensors, an...
November 30, 2005
2002 Ford E-150 Econoline 4.2L MIL Lamp on VIN: 1FTRE14212
P1131: Lack of HO2S B1S1 Sw Indicates Lean. Hello All I have ran into two of these vans in the last two days with high mileage and same codes. Both vans have NO drivibility problems associated with these codes other than a check engine light on. Both vehicles have had new MAFs, both front O2 sensors, an...
November 30, 2005