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Home >> Hyundai >> 2017 >> Elantra Eco >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis - 1.4L (3 Of 3) >> DTC P2237: 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
  2. Open or short power/ground in signal circuit
  3. S1
Case1 Enable Conditions
  • Closed loop fuel control
  • Fuel factor changes is higher than 0.1
Threshold Value
  • Sensor voltage is between 2.48 and 2.51
Case2 Enable Conditions
  • Target lambda is lower than -3% or Reference Target lambda is higher than 3%
Threshold Value
  • Sensor voltage is between 2.48 and 2.51
Case3 Enable Conditions
  • Reference Cell Voltage is lower than 0.43V or Reference Cell Voltage is higher than 0.47V
Threshold Value
  • Reference Cell Voltage is lower than 1V or Reference Cell Voltage is higher than 4V
Diagnostic Time
  • Immediate
MIL ON Condition
  • 2 driving cycle
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