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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 57 (Engine Control System Diagnosis (2 Of 2) (HEV)) >> DTC P2123: Throttle/Pedal Position Sensor/Switch 'D' Circuit High Input >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

WARNING: This page is about a different variant/trim than selected.
Item Detecting Condition Possible Cause
DTC Strategy
  • Electrical Check
  1. Open in ground circuit
  2. Short to battery in signal circuit
  3. Poor connection or damaged harness
  4. Faulty APS1
Enable Conditions
  • No error for power supply circuit in APS1
Threshold Value
  • APS1 > 4.7V
Diagnostic Time
  • 0.3 sec.
MIL On Condition
  • 1 Driving Cycle
Limp-Home
  • Forced limited power mode: The PCM limits opening angle of the throttle valve to max. 50% and engine torque to a certain predetermined value.
  • After idle recognition, the PCM uses APS2 signal to calculate the current opening angle of the throttle valve.
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