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Home >> Toyota >> 2003 >> MR2 C65M >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self Diagnostics >> Diagnostic Tests >> DTC P0121: Throttle/Pedal Position Sensor/Switch "A"Circuit Range/Performance Problem >> Possible Causes

Possible Causes

DTC is set after vehicle speed has exceeded 19 MPH once and TP sensor output voltage is out of range while vehicle speed is 0-19 MPH. Possible cause is defective TP sensor.

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