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Home >> Hyundai >> 2021 >> Veloster N Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 3) >> DTC P0121-00: Throttle/Pedal Position Sensor/Switch 'A' Circuit Range/Performance >> DTC Information And Inspection >> DTC Detecting Condition
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DTC Information And Inspection: DTC Detecting Condition

Item Detecting Condition Possible Cause
Main Action
  • Plausibility check between TPS1 and TPS2
  1. Faulty TPS1 or TPS2 Sensor
  2. Poor connection or damaged harness
Prerequisite Condition
  • Engine speed is higher than 450 RPM.
  • No TPS adaptation is requested.
Threshold Value
  • Absolute value of difference between TPS1 and TPS2 is higher than 8° (7.6%)
Diagnostic Time
  • 0.3 Seconds
MIL On Condition
  • 2nd Driving Cycle
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