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P1656 Diagnostic Trouble Code Discussion for August 2005

Wastegate Solenoid Control Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1656
Help Request Posted
2000 Chevrolet Express 3500 6.5L Surge VIN: 1GBJG31F0Y
P1656: Wastegate Solenoid Control Circuit Malfunction. This cubevan has a surge going up hills .the computer is opening and closing the wastegate. It set some bosst pressure related codes in history but I think they were caused by another tech looking at the vehicle.scan data shows no other input changing that coi...
August 05, 2005