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Home >> Hyundai >> 2003 >> Elantra GLS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0131: Ho2S Circuit Low Input (Bank 1/Sensor 1) >> General Information >> DTC Detecting Condition
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General Information: DTC Detecting Condition

DTC DETECTING CONDITION AND POSSIBLE CAUSES

Item Detecting Condition Possible Cause
DTC Strategy
  • Check short circuit on linear oxygen sensor
  • Short to ground in signal harness.
  • Contact resistance in connectors.
  • Faulty Heated O2 Sensor (HO2S).
Enable Conditions
  • Engine running
  • 10V < Battery voltage < 16V
Threshold Value
  • Short circuit to ground
Diagnostic Time
  • 2.55 Seconds
Fail Safe
  • Reset lambda adaptation and fuel trim adaptation
  • Front HO2S heater is controlled in open loop control.
  • EVAP emission control function is controlled in minimum operation mode.
MIL On Condition
  • 2 Driving Cycles
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