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P2120 Diagnostic Trouble Code Discussion for January 2014

Accelerator Pedal Position Sensor 1 Circuit Malfunction

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Trouble Ticket Help Requests for DTC P2120
Help Request Posted
2004 GMC Yukon SLT 5.3L Surge, runaway idle
P2120: Accelerator Pedal Position Sensor 1 Circuit Malfunction. get app 1&2 codes, tps 1&2 codes Tried known good throttle body and accelerator assemblies. Tried stabilant 22, tried known good tach module.
January 30, 2014