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Home >> Hyundai >> 2013 >> Genesis Coupe 2.0T, Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTC Troubleshooting) (3 Of 3) - 2.0L >> DTC P2251: O2 Sensor Reference Ground Circuit/Open (Bank 1 Sensor 1) >> DTC Detecting Condition
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DTC P2251: O2 Sensor Reference Ground Circuit/Open (Bank 1 Sensor 1): DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item Detecting Condition Possible Cause
DTC Strategy
  • Reference ground circuit open (VG)
  • Poor connection or damaged harness
  • Open in HO2S control circuit
  • Front HO2S
Enable Conditions
  • 11V < Battery voltage < 16V
Threshold Value
  • 1.9V < Signal < 2.1V for 5sec during internal test
  • Symptom detected on no activity
  • Signal < 2.1V during fuel cut off
Diagnostic Time
  • Within 15 sec. after related symptom detected
Mil On Condition
  • 2 Driving Cycles
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