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P1139 Diagnostic Trouble Code Discussion for March 2012

Air Fuel Sensor (Bank 1 Sensor 1) Circuit Performance

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Trouble Ticket Help Requests for DTC P1139
Help Request Posted
2001 Audi A6 Quattro 2.7L Excessive Emissions, MIL Lamp on VIN: WAUED64BX1
P1139: Excessive long term fuel trims. ... vehicle in for a check engine light...the code was P1139 and the long term trims were in the + 15 range. Smoke tested the induction...good and the frt & rear O2 sensors were also behaving. Following the suggestions in the TSBs and Identifix we replaced...
March 01, 2012