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P1128 Diagnostic Trouble Code Discussion for October 2005

Closed Loop Fueling Not Achieved - Bank 1


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Trouble Ticket Help Requests for DTC P1128
Help Request Posted
2000 Volkswagen Passat GLS 1.8L MIL Lamp on VIN: WVWMA23B1Y
P1128: o2 signal issue. All ,in previous notes
October 04, 2005
2000 Volkswagen Beetle GLS 2.0L MIL Lamp on VIN: 3VWCA21C2Y
P1128: Long term fuel trim bank 1 too lean. This is just one particular car but we have about 4 of these Beetles that are setting these codes on a regular basis. Some cars will have both codes stored. Others one code or the other. We have tried oxygen sensors, checked fuel pressure, checked regulators, ...
October 05, 2005
2000 Volkswagen Passat GLS 1.8L MIL Lamp on VIN: WVWMA23B1Y
P1128: o2 signal issue. All ,in previous notes
October 04, 2005
2000 Volkswagen Beetle GLS 2.0L MIL Lamp on VIN: 3VWCA21C2Y
P1128: Long term fuel trim bank 1 too lean. This is just one particular car but we have about 4 of these Beetles that are setting these codes on a regular basis. Some cars will have both codes stored. Others one code or the other. We have tried oxygen sensors, checked fuel pressure, checked regulators, ...
October 05, 2005