P1639 Diagnostic Trouble Code Discussion for March 2011
5-Volt Reference 'B' Circuit Malfunction
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| Help Request | Posted | |
| 2000 Volkswagen Jetta GLS 2.8L Poor Idle Quality, Cuts out, Stall, MIL Lamp on VIN: 3VWSE29MOY P1639: Accelerator pedal position sensor 1/2 range. Car barely starts/idles/runs, will start up and idle high and smooth for 1-10 seconds, then drops to 4-500rpm. No power in gear, was able to get runnability back by unplugging the air flow meter. Still runs in throttle limp mode, smooth but only barely opens t... |
March 04, 2011 | |
| 2000 Volkswagen Jetta GLS 2.8L Poor Idle Quality, Cuts out, Stall, MIL Lamp on VIN: 3VWSE29MOY P1639: Accelerator pedal position sensor 1/2 range. Car barely starts/idles/runs, will start up and idle high and smooth for 1-10 seconds, then drops to 4-500rpm. No power in gear, was able to get runnability back by unplugging the air flow meter. Still runs in throttle limp mode, smooth but only barely opens t... |
March 07, 2011 |
