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P1571 Diagnostic Trouble Code Discussion for July 2009

Traction Control Torque Request Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1571
Help Request Posted
2003 Buick LeSabre Limited 3.8L MIL Lamp on VIN: 1G4HR54K73
P1571: TCS PWM circuit no frequency/ signal. This car came in yesterday. Sometimes it runs great and then the door chimes go off and the mil light comes on with the traction contorl light as well. When these lights are on the HVAC control head blacks out and the A/C is inoperable. When I first checked fo...
July 29, 2009