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P1556 Diagnostic Trouble Code Discussion for July 2007

Battery Module Temperature Sensor Signal 2 Circuit High Voltage

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Trouble Ticket Help Requests for DTC P1556
Help Request Posted
2000 Volkswagen Jetta TDI 1.9L MIL Lamp on, no power VIN: 3VWSF29M6Y
P1556: turbo pressure control. Vehicle came in with a P1556 (vw code 17964), turbo boost control. Snap-on's shop key has no information on these codes. Car has no power, like a bad turbo. Can it be a plugged intake system (have read about some of these), or a bad turbo/waste gate? How can I...
July 17, 2007