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Home >> Kia >> 2023 >> Niro Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (PHEV) (7 Of 9) >> DTC P2237-00: O2 Sensor Pumping Current Circuit/Open (Bank 1 Sensor 1) >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Electrical check
  • Poor connector connection
  • Open in HO2S control circuit
  • Front HO2S
Enable Conditions
  • Sensor ceramic temperature is greater than 640°C (1184°F)
  • Sensor forced stimulation active
  • Normal 12V battery voltage (11 to 16V)
  • Sensor operative readiness detected
Threshold Value
  • Pumping cell resistance value is higher than 323Ω
  • When the difference between the pumping cell voltage and the virtual ground line is less than 1.2V
  • When the difference between the nernst cell voltage and the virtual ground line is higher than 1.2V
Diagnostic Time
  • Continuously
MIL ON Condition
  • 2 driving cycles