P1128 Diagnostic Trouble Code Discussion for November 2017
Closed Loop Fueling Not Achieved - Bank 1
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| Help Request | Posted | |
| 2001 Volkswagen Beetle GLS 1.8L MIL Lamp on VIN: 3VWCC21C11 P1128: Bank 1 mixture adaption mult. System too lean. Long term fuel trim value is only indicating a lean condition under part throttle load. The short term fuel trim values are normal under idle so does not indicate a vacuum leak. I have checked all vacuum lines and vacuum control diaphragms for leaks and none p... |
November 14, 2017 |
