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Home >> Kia >> 2019 >> Optima EX >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis - 1.6L (5 Of 6) (Except HEV) >> DTC P2123: Throttle/Pedal Position Sensor/Switch 'D' Circuit High Input >> Component Inspection >> Check APS

Check APS

  1. Connect KDS to DLC (Data Link Cable).
  2. Warm up the engine to normal operating temperature.
  3. Check the "Current Data" about related DTC with KDS.
    G12922829Courtesy of KIA MOTORS AMERICA, INC.
  4. Are the parameters displayed correctly?

    YES 

    NO 

    • Carefully re-do this troubleshooting guide steps.
    • If problem still occurs, replace APS and then go to "VERIFICATION OF REPAIR " procedure.
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