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P1138 Diagnostic Trouble Code Discussion for May 2007

Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage During Decel Fuel Cutoff

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Trouble Ticket Help Requests for DTC P1138
Help Request Posted
1999 Audi A6 Quattro 2.8L MIL Lamp on, Lean Run DTC VIN: WAUBA24B6X
P1138: Fuel Trim Bank 2 Add System too Lean. When the car first came in the only concern the owner had was the CEL being on. I did a Motorvac and replaced the temp sensor; clearedn the DTCs and reset readiness codes. The car left and came back the next day with the lean run DTCs again. I ran a test on th...
May 11, 2007