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P1639 Diagnostic Trouble Code Discussion for March 2011

5-Volt Reference 'B' Circuit Malfunction


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Trouble Ticket Help Requests for DTC P1639
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
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