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P1128 Diagnostic Trouble Code Discussion for November 2010

Closed Loop Fueling Not Achieved - Bank 1

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Trouble Ticket Help Requests for DTC P1128
Help Request Posted
2001 Audi A4 1.8L MIL Lamp on VIN: WAUAC68D51
P1128: Fuel Trim Bank 1 Mult System too Lean. ... the P1128 and P1479 codes current. We smoked tested the intake system and found the vacuum leaks listed in related repair history. After replacing those parts I re-smoked it to confirm rep...
November 16, 2010