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P1139 Diagnostic Trouble Code Discussion for June 2013

Air Fuel Sensor (Bank 1 Sensor 1) Circuit Performance

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Trouble Ticket Help Requests for DTC P1139
Help Request Posted
2007 Audi A4 Quattro 3.2L Excessive Emissions VIN: WAUDH78E77
P1139: Fuel Tirm Bank 2 - System to RICH. Dear Audi Friends, according to the Guided Fault Finding I have checked the Evap. Canister Purge Regulating Valve and couldn't find anything wrong. No, I have not pulled the Fuel injectors yet, because I don't believe a fuel injector is bad. It also says to c...
June 06, 2013