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Home >> Lexus >> 2009 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0010 - P0340)) >> SFI System >> DTC P0121: Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem >> Procedure
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DTC P0121: Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem: Procedure

  1. READ OTHER DTC OUTPUT (IN ADDITION TO DTC P0121) 

    Result

    Display (DTC output) Proceed to
    P0121 A
    P0121 and other DTCs B

    HINT: 

    If any other codes besides P0121 are output, perform the troubleshooting for those codes first.

    B → GO TO RELEVANT DTC CHART 

    A → REPLACE THROTTLE BODY