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Home >> Hyundai >> 2012 >> Accent GLS, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) >> 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 (B1/S2)
  4. ECM
Enable Conditions
  • Battery voltage is higher than 10.7V
  • Lambda is than 1.1 for 9sec
Threshold Value
  • S2 sensor voltage is lower than 0.65V
Diagnostic Time
  • 9 sec
MIL ON Condition
  • 2 Driving Cycles
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