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P1556 Diagnostic Trouble Code Discussion for June 2007

Battery Module Temperature Sensor Signal 2 Circuit High Voltage

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Trouble Ticket Help Requests for DTC P1556
Help Request Posted
2002 Volkswagen Jetta TDI 1.9L MIL Lamp on, low power VIN: 3VWSP69M92
P1556: Manufacture specific code. ... owner. We cleaned the intake, replaced the MAF, Glow plugs, CTS and fuel filter. We replaced the timing belt which was off a couple of teeth at the injector pump only. It RAN PERFECT. Customer was estatic and said it never ran this good. THought we even fi...
June 18, 2007