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Home >> Hyundai >> 2005 >> Elantra GLS, 4D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System >> DTC Troubleshooting Procedures >> DTC P2251: Ho2S Reference Ground Circuit/Open-Bank 1, Sensor 1 >> DTC Detecting Condition
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DTC P2251: Ho2S Reference Ground Circuit/Open-Bank 1, Sensor 1: DTC Detecting Condition

DTC DETECTING CONDITION

Item Detecting Condition Possible Cause
DTC Strategy
  • Open circuit check of front HO2S circuit
  • Contact resistance in connectors
  • Open or Short to ground in HO2S circuit
  • Front HO2S
Enable Conditions
  • No relevant failure
Threshold Value
  • Front HO2S signal during fuel cut-off > 4.9V
Diagnostic Time
  • Approx. 1300 sec.
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