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Home >> Hyundai >> 2021 >> Tucson Value, FWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis - 2.0L (3 Of 3) >> 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
  • Rationality check
  1. Poor connection or damaged harness
  2. Open in HO2S control circuit
  3. Front HO2S
Case 1 Enable Conditions
  • Closed loop fuel control
  • Fuel factor changes are higher than 0.1.
Threshold Value
  • Sensor voltage is between 1.49v and 1.51V.
Case 2 Enable Conditions
  • Target lambda is between 0.97 and 1.03.
  • Integrated mass flow is higher than 0.3kg.
Threshold Value
  • Sensor voltage is between 1.49v and 1.51V.
Case 3 Enable Conditions
  • Fuel cut condition
Threshold Value
  • Front O2 sensor voltage is lower than 0V.
Diagnostic Time
  • Immediate
MIL On Condition
  • 2 driving cycles
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