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Home >> Hyundai >> 2017 >> Accent Value Edition >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) >> DTC P2237: O2 Sensor Pumping Current CircuitOpen (Bank 1 Sensor 1) >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

DTC DETECTING CONDITIONS AND POSSIBLE CAUSES

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
  • S1 sensor voltage is between 1.49V and 1.5V
Threshold Value
  • Deviation of average correction value of fuel ratio is higher than 0.1
Diagnostic Time
  • 3sec
Case2 Enable Conditions
  • Fuel cut condition is higher than 3sec
Threshold Value
  • S1 sensor voltage is lower than 1.7V
Diagnostic Time
  • 5sec
Case3 Enable Conditions
  • Target value of fuel ratio is lower than 0.97
  • S1 sensor voltage is between 1.49V and 1.5V
Threshold Value
  • Integrated air mass is higher than 0.2kg
Threshold Value
  • 3sec
MIL ON Condition
  • 2 driving cycle
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