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Home >> Kia >> 2021 >> Rio LX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 6) >> DTC P0121-00: Throttle Position Sensor 1 Signal Circuit Range/Performance >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Monitor the TPS 1 and TPS performance
  • Poor connector connection
  • Faulty TPS
  • ECM/PCM
  • Faulty throttle plate
  • Throttle body
Enable Conditions
  • Engine speed is higher than 320 RPM
Threshold Value
  • Deviation of output signal valve of TPS and TPS 1 is higher than 6.3%
  • Deviation of TPS 1 and specified output signal valve of TPS is higher than 9%
Diagnostic Time
  • 0.28s
MIL ON Condition
  • 1 driving cycle
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