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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 125 (Engine Control System Diagnosis (1 Of 2) (HEV)) >> DTC P0037: HO2S Heater Control Circuit Low (Bank 1/Sensor 2) >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Electrical Check
  1. Related fuse blown or missing
  2. Open or short to ground in power supply or control harness
  3. Poor connection or damaged harness
  4. Faulty HO2S
Enable Conditions
  • No relevant failure
  • 10V< Battery voltage <16V
  • 3.5%< O2 sensor heater control duty <96.5%
Threshold Value
  • Short circuit to ground
Diagnostic Time
  • 10 sec.
Mil On Condition
  • 2 Driving Cycles
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