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P1131 Diagnostic Trouble Code Discussion for October 2011

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
1999 Ford F-150 5.4L Poor Idle Quality, Surge, Stall, MIL Lamp on VIN: 2FTRX18COX
P1131: o2 1/1 indicates lean. ... at stops. I cant verify the nearly dying at stops. After intake gasket repalcement the only dtcs to come back were p1131 and p1151 o2 indicates lean with p0401 egr insufficant flow. Before gasket replacement it was p0171 a...
October 03, 2011
1999 Ford F-150 5.4L Poor Idle Quality, Surge, Stall, MIL Lamp on VIN: 2FTRX18COX
P1131: o2 1/1 indicates lean. ... at stops. I cant verify the nearly dying at stops. After intake gasket repalcement the only dtcs to come back were p1131 and p1151 o2 indicates lean with p0401 egr insufficant flow. Before gasket replacement it was p0171 a...
October 03, 2011