FixVault
Home › Hyundai › 2017 › Elantra Eco › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis - 1.4L (3 Of 3) › DTC P2251: O2 Sensor Reference Ground Circuit/Open (Bank 1 Sensor 1) › DTC Information › DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Circuit continuity check
  1. Poor connection
  2. Open or short power/ground in signal circuit
  3. S1
Enable Conditions
  • Internal resistance is higher than 950Ω
Threshold value
  • Sensor voltage is between 2.3V and 2.7V
Diagnosis Time
  • Immediate
MIL On Condition
  • 2 driving cycle
About FixVault