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Home › Hyundai › 2021 › Tucson Value, FWD › Repair and Diagnosis › 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

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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