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P1556 Diagnostic Trouble Code Discussion for June 2005

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 GLX 1.8L MIL Lamp on VIN: 3VWDD21C5Y
P1556: 17964 turbo pressure control below min. level. ... before and i replaced all vacuum lines, came back with code 17832 and combination valve was not holding vacuum, blocked off vacuum line to valve cleared codes and sent on there way now has same code plus brought along some of its freinds code 17964 (p1556)...
June 16, 2005