FixVault

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Monitor HO2S's signal (Downstream HO2S signal is too low)
  • Poor connection
  • Faulty HO2S
  • Clogging of fuel filter in fuel pump
  • Faulty ECM
Enable Condition
  • Fuel cut off is not activated
  • Full load is not activated (Gas pedal value is less than or equal to 90%)
  • Catalyst overheating prevention is not activated
  • Battery voltage is between 11V and 16V
Threshold Value
  • Downstream HO2S voltage is lower than 0.75V when lambda set point is equal to 0.8
Diagnostic Time
  • 7s after lambda set point shift to corresponding side
MIL ON Condition
  • 2 driving cycles