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Home › Hyundai › 2017 › Elantra GT Automatic Trans › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis (3 Of 3) › DTC P2237: 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
  2. Open or short power/ground in signal circuit
  3. S1
Case 1 Enable Conditions
  • Closed loop fuel control.
  • Fuel factor changes is higher than 0.1
Threshold Value
  • Sensor voltage is between 1.49 and 1.51
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 1.49 and 1.51
Case 3 Enable Conditions
  • Fuel cut condition
Threshold Value
  • S1 sensor voltage is lower than 0V
Diagnostic Time
  • Immediate
MIL ON Condition
  • 2 driving cycle
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