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P1129 Diagnostic Trouble Code Discussion for November 2010

Closed Loop Fueling Not Achieved (Bank 2)

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Trouble Ticket Help Requests for DTC P1129
Help Request Posted
1999 Volkswagen Passat GLS 2.8L MIL Lamp on VIN: WVWMD63B6X
P1129: Bank 2 long term fuel trim system too rich. ... registration unlikely value), P1129(bank 2 LTF trim rich), P1127(bank 1 LTF trim rich). I found all vacuum hoses were deteriorate. Replaced all hoses and new aftermarket MAF. Road tested 60 miles. No Check engine light. Give car back to customer. Customer ...
November 06, 2010