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Home >> Hyundai >> 2016 >> Elantra Value Edition >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis - 1.8L (1 Of 2) >> DTC P0123: Throttle/Pedal Position Sensor/Switch 'A' Circuit High Input >> DTC Description >> DTC Detecting Condition
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DTC Description: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Short to Battery or Open circuit
  1. Open in ground circuit
  2. Short to battery in signal circuit
  3. Poor connection or damaged harness
  4. Faulty TPS1
Case1 Enable Conditions
  • Ignition "ON"
Threshold Value
  • TPS > 4.9V
Case1 Enable Conditions
  • Ignition "ON"
  • In idle status
  • Target throttle angle < 58%
  • MAF Limphome detected or TPS2 failure detected
Threshold Value
  • TPS1 > 3.0V
Diagnostic Time
  • 0.05 sec.
Mil On Condition
  • 1 Drive Cycles
Limp-Home
  • Forced limited power mode: When the DTC is set, the PCM/ECM reduces engine torque by 25% of normal value.
  • The PCM/ECM uses TPS2 signal to monitor the controlled opening angle of the throttle valve.
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