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Home >> Hyundai >> 2014 >> Equus Signature >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) >> DTC P2271: O2 Sensor Signal Stuck Rich (Bank 1 Sensor 2) >> DTC Information >> DTC Detecting Condition
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DTC 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 0.9 for 9 sec.
Threshold Value
  • S2 sensor voltage is lower than 0.65V
Diagnostic Time
  • 9 sec.
MIL ON Condition
  • 2 Driving Cycle
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