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DTC P2121 Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance: Description

Refer to DTC P2120  .

DTC CHART

DTC No. DTC Detection Condition Trouble Area
P2121 Conditions (a) and (b) continue for 0.5 sec.:
  1. Difference between VPA and VPA2 deviates from standard
  2. IDL is OFF
  • Open or short in accelerator pedal position sensor circuit
  • Accelerator pedal position sensor
  • ECM