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P1639 Diagnostic Trouble Code Discussion for December 2006

5-Volt Reference 'B' Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1639
Help Request Posted
2001 Volkswagen Golf GTI GLS 1.8L MIL Lamp on VIN: 9BWDD61J61
P1639: Accelerato Position Sensor 1/2 G79/G158 Implausible Signal. ... kicking my butt………. This vehicle came in about 8 months ago with a check engine light on, had 8 codes P0300-P0304 misfire codes, also P1639, P0139, P1176. We did a tune up, replaced both oxygen sensors, installed new coil packs and replaced the accelerator...
December 06, 2006