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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 P0037: O2 Sensor Heater Circuit Low (Bank 1, Sensor 2) >> DTC Detecting Condition >> 1.5 SOHC
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1.5 SOHC

1.5 SOHC DETECTING CONDITION

Item Detecting Condition Possible cause
Monitoring Strategy
  • Heater check, low
  • Open in battery and control circuit
  • Short to ground in control circuit (pin 28 to 35)
  • Faulty HO2S heater
  • Faulty PCM
Threshold value  
Enable Conditions
  • Open or short circuit
Diagnostic Time
  • Continuous
Fail Safe
  • Heater open loop control
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