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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) (5 Of 6) >> DTC P2271-00: O2 Sensor Stuck Rich - Bank1 Sensor 2 >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Rationality check
  • Poor connector connection
  • HO2S (Bank1, Sensor2)
  • Faulty ECM
Enable Condition
  • Integrated air flow rate after fuel cut is between 16 to 50g
  • Full load not active
  • Normal auxiliary battery voltage (11 to 16V)
  • Long term fuel trim value is less than -0.065
Threshold Value
  • Downstream HO2S voltage is greater than 0.2V
MIL ON Condition
  • 2 driving cycles
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