Join Now
International Automotive Technicians Network

P1639 Diagnostic Trouble Code Discussion for April 2008

5-Volt Reference 'B' Circuit Malfunction


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P1639
Help Request Posted
2002 Volkswagen Jetta GLS 2.0L MIL Lamp on VIN: 3VWSB69M42
P1639: app sensor 12 implausible signal. ... on and epc lights on.. codes p1639 and p1630. went through aldata steps and replaced accelerator pedal accordingly.. reset codes immediately. vehicle has no power seems like quarter throttle max. tested wiring again all seems to check ok .. signal wires go...
April 25, 2008
2002 Volkswagen Jetta GLS 2.0L MIL Lamp on VIN: 3VWSB69M42
P1639: app sensor 12 implausible signal. ... on and epc lights on.. codes p1639 and p1630. went through aldata steps and replaced accelerator pedal accordingly.. reset codes immediately. vehicle has no power seems like quarter throttle max. tested wiring again all seems to check ok .. signal wires go...
April 25, 2008