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Home >> Kia >> 2019 >> Optima EX >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (5 Of 6) (PHEV) >> DTC P2270-00: O2 Sensor Signal Stuck Lean (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
  • Electrical Monitoring
  1. Poor Connector Connection
  2. Faulty Downstream O2 Sensor
Enable Conditions
  • No fuel cut off
  • No full load phase
  • No catalyst overheating protection
  • Battery voltage is between 11V and 16V
Threshold Value
  • Downstream O2 Sensor Voltage less than 0.75 when lambda set point is 0.8
Diagnostic Time
  • 7s after lambda set point shift to corresponding side
MIL ON Condition
  • 2 Driving Cycles
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