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Home >> Hyundai >> 2010 >> Elantra GLS >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Control System Diagnosis (2 Of 2) >> DTC P2251: O2 Sensor Reference Ground Circuit Open (Bank 1 Sensor 1) >> General Information >> DTC Detecting Condition
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General Information: DTC Detecting Condition

DTC DETECTING CONDITION AND POSSIBLE CAUSE

Item Detecting Condition Possible Cause
DTC Strategy
  • Electrical Check - Check symptoms related to Lambda sensor open circuit
  • Poor connection or damaged harness
  • Open in HO2S control circuit
  • Front HO2S
Enable Conditions
  • No Pump current malfunction
Threshold Value
  • Reference ground open circuit (VRc)
Diagnostic Time
  • 1300 sec.
MIL On Condition
  • 2 Driving Cycles
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