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P1128 Diagnostic Trouble Code Discussion for January 2006

Closed Loop Fueling Not Achieved - Bank 1


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Trouble Ticket Help Requests for DTC P1128
Help Request Posted
2000 Volkswagen Cabrio GL 2.0L Hesitation, MIL Lamp on VIN: 3VWCC21V3Y
P1128: bank 1 mixture adaption system too lean. ... display trouble code p1128 and hesitates under heavy throttle. no vaccum leaks or secondary air leaks. o2 sensors are working.
January 17, 2006