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P2121 Diagnostic Trouble Code Discussion for May 2015

Accelerator Pedal Position Sensor 1 Performance

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Trouble Ticket Help Requests for DTC P2121
Help Request Posted
2004 Lexus ES330 3.3L Hesitation VIN: JTHBA30G44
P2121: Throttle Pedal Position Sensor/Switch 'D' Circuit Malfunction. Code 2121 set and vehicle went into limp mode with very little throttle response. Ran fine before the check engine light came on and the traction control and stability icons illuminated. The electronic throttle control sensor is $800 and the accelerator pedal ...
May 29, 2015