LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hyundai >> 2014 >> Veloster Base, Standard Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Control System Diagnosis (2 Of 2) - Non-Turbo >> DTC P2251: O2 Sensor Reference Ground Circuit Open (Bank 1 Sensor 1) >> DTC Information >> DTC Detecting Condition
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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
  • sensor voltage is between 1.47V and 1.53V
Threshold Value
  • Internal resistance is higher than 950Ω
Diagnostic Time
  • 5 sec
MIL ON Condition
  • 2 Driving cycle
scientia non olet · About LEMON Manuals