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Home >> Hyundai >> 2019 >> Sonata Plug-In Hybrid >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) (PHEV) >> DTC P2270: 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
  • Downstream O2 sensor signal is too low
  1. Poor connection or damaged harness
  2. Rear HO2S
Enable Conditions
  • No fuel cut-off
  • No full load phase
  • No catalyst overheating protection
  • Battery voltage is between 11V and 16V
Threshold Value
  • Rear HO2S signal is lower than 0.75V when lambda set point equal to 0.80
  • Downstream O2 sensor signal is too low
Diagnosis Time
  • 7 sec after lambda set point shift to corresponding side
MIL On Condition
  • 2 Driving Cycles
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