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P1131 Diagnostic Trouble Code Discussion for February 2009

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 Ranger XL 3.0L Poor Idle Quality, Hesitation, Cuts out VIN: 1FTYR10V3X
P1131: b1s1 lean 02. Truck in for hard starting and dies and no power on take off feels like running out of gas. Check for codes had P0171,174,1131,1151, short term fuel trim running between 28 and 34 both banks, and long term in the 20's both banks,both upstream 02's are between ...
February 05, 2009