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Home › Hyundai › 2004 › Accent Base › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis (1 Of 2) › DTC Troubleshooting Procedures › DTC P0131: O2 Sensor Circuit Low Input (Bank1/Sens0R1) › DTC Detecting Condition › 1.6 DOHC

1.6 DOHC

1.6 DOHC DETECTING CONDITION

Item Detecting Condition Possible cause
Monitoring Strategy
  • Signal check, low
  • Short to ground in control circuit (pin 18 to 36)
  • Faulty HO2S
  • Faulty PCM
Threshold value
  • Sensor voltage: < 0.04V
Enable Conditions
  • Downstream O2 sensor voltage > 0.5 V
  • Sensor in cold condition
Diagnostic Time
  • 8 sec
  • 0.1 sec
Fail Safe
  • None
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