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Home >> Kia >> 2015 >> Optima LX >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 3) - 2.4L (Except HEV) >> DTC P0121: Throttle/Pedal Position Sensor/Switch 'A' Circuit Range/Performance >> DTC Information >> DTC Description

DTC Description

The PCM monitors the output signals from TPS1 and TPS2. If the average value is more than the threshold value, the PCM sets DTC P0121.