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Home >> Scion >> 2004 >> xA Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - Diagnosis >> DTC P0121: Throttle/Pedal Position Sensor/Switch "A" Circuit Range/Performance Problem >> Circuit Description
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Circuit Description

Refer to DTC P0120 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT, DTC P0122 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT LOW INPUT, DTC P0123 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT HIGH INPUT .

DTC P0121

DTC No. DTC Detection Condition Trouble Area
P0121 After The Vehicle Speed Has Exceeded 19 mph (30 km/h) once, When Output Voltage Of Throttle Position Sensor Which Indicates "Closed Throttle Position" Deviates From Applicable Range (4 Times Or More)
  • Throttle Position Sensor (Built In Throttle Body)
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