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2006 Pontiac Grand Prix Base Model - Error Codes P1125, P2138, and P2125 After Throttle Body and Pedal Replacement

Model: Pontiac Grand Prix Fault Code: P1125 Posted: 2017-05-01 11:00

Hello, I'm experiencing persistent error codes P1125, P2138, and P2125 on my 2006 Pontiac Grand Prix Base Model. I've already replaced the throttle body and pedal assembly, and I recently identified and repaired open wires in the engine compartment. Despite these efforts, the fault codes continue to appear. Could anyone provide additional troubleshooting steps or potential fixes for these specific diagnostic trouble codes on this vehicle model?

Related fault codes
P1125P2125P2138
Comments (1)
Anonymous 2017-05-01 12:53

After replacing both the throttle body and pedal position sensor, it's important to check for voltage drops or circuit issues in the wiring harness. Refer to this forum for detailed diagnosis procedures related to voltage and circuit problems that may be triggering codes P1125, P2138, and P212-5 on a 2006 Pontiac Grand Prix.