FixVault

General Information: DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item Detecting Condition Possible Cause
DTC Strategy
  • Switching Time check at entry in Fuel Cut-Off
  • Leak in intake or exhaust system
  • Faulty fuel system.
  • Front and rear HO2S connections reversed.
  • Poor connection or damaged harness
  • HO2S contamination
Enable Conditions
  • Catalyst temp. model >350°C (662°F)
  • No relevant failure
  • 11V < Battery voltage
  • Downstream O2 sensor signal at entry in fuel cut off > 0.55V
  • 4.8 Km/h (3 MPH)<Vehicle speed<180 Km/h (112 MPH)
Threshold Value
  • Average ratio (between measured and maximum allowed switching time at entry in fuel cut-off) > 1
Diagnostic Time
  • 3 fuel cut-off phases
Mil On Condition
  • 2 Driving Cycles