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P1556 Diagnostic Trouble Code Discussion for July 2004

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 Beetle GLS 1.9L MIL Lamp on, poor power VIN: 3VWCF21COY
P1556: charge pressure upper limit deviation. ... code of p1556 or 17964.After driving car it has poor power,acts like turbo not working,sometimes a little whine but not often.This code not in alldata for this car but we went after the wastegate actuator thinking there was no boost all tests on components...
July 02, 2004