FixVault

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Response rate monitoring
  • Poor connector connection
  • Air leak in intake or exhaust system
  • Faulty fuel system
  • Faulty downstream O2 sensor
Enable Condition
  • Downstream O2 sensor readiness detected
  • Downstream O2 sensor pre-heating phase finished
  • Catalyst temperature (model) is higher than 200°C (392°F)
  • Downstream O2 sensor signal at entry into fuel cut-off is higher than
  • 0.6V
  • No relevant failure
  • Battery voltage is between 11V and 16V
Threshold Value
  • Downstream O2S voltage is lower than 800mV/s
Diagnostic Time
  • 3 valid fuel cut off phases
MIL ON Condition
  • 2 driving cycles