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Home >> Kia >> 2021 >> Niro Plug-In Hybrid LXS >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (PHEV) (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
  • Plausibility check between TPS1 and TPS2
  • Poor connector connection
  • TPS
  • ECM
Enable Condition
  • Engine speed during engine start is greater than between 928 to 1312rpm
  • No TPS adaptation request
Threshold Value
  • When the difference between the measured mass air flow of TPS2 and the measured air mass flow of TPS1 is greater than 8%
Diagnostic Time
  • 0.3s
MIL ON Condition
  • 1 driving cycle
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