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Home >> Kia >> 2017 >> Rio EX, 4D Hatchback >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) >> DTC P2271: O2 Sensor Signal Stuck Rich (Bank 1 / Sensor 2) >> General Information >> DTC Detecting Condition
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General Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • No signal activity
  1. Poor connection
  2. Short to Power in signal circuit
  3. HO2S (S2)
  4. ECM
Enable Conditions
  • Mass flow: 20~120 kg/h
  • Delta Mass Flow 2 kg/h
Threshold Value
  • Downstream O2S voltage > 0.65V (8sec)
  • Downstream O2S voltage (Fuel cut) > 0.25 V (0.2sec)
Diagnostic Time
  • -
MIL ON Condition
  • 2 Driving Cycles
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