P0641 Diagnostic Trouble Code Discussion for January 2017
5-Volt Reference 1 Circuit Malfunction
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| Help Request | Posted | |
| 2009 Volkswagen Passat Komfort 2.0L Poor Idle Quality, Cuts out, MIL Lamp on VIN: WVWJK73C69 P0641: Sensor Reference Voltage A Circuit Open. Replaced -fuel pressure sensor/boost pressure sensor/dealer replaced intake runner and reflashed pcm. 4 new coils and cam sensor replaced by dealer in march 2016. Vehicle came in with a check engine light on and the vehicle was running fine. After checking co... |
January 25, 2017 | |
| 2010 Volkswagen CC Sport 2.0L Hesitation, Cuts out, MIL Lamp on VIN: WVWMN7AN0A P0641: Sensor Reference Voltage A Circuit Open. this car ended up here after another shop couldn't figure it out. what i need help with is Im trying to figure out where the 5 volt reference is going when it drops out. Im assuming a bad sensor is shorting it straight to ground. the throttle body and harness ... |
January 25, 2017 |
