General Information: DTC Detecting Condition
DTC DETECTING CONDITION AND POSSIBLE CAUSES
| Item |
Detecting Condition |
Possible Cause |
| DTC Strategy |
- Check catalyst oxygen storage capacity by evaluating downstream O2 sensor fluctuations
|
- Exhaust gas leaks
- Faulty rear HO2S
- Faulty three way catalyst converter
|
| Enable Conditions |
- Catalyst model temperature: 400~900°C (752~1652°F)
- Coolant temperature > 76°C (168.8°F)
- Vehicle speed: 5~170 km/h (3.1~105.6 mph)
- 100mg (0.2 mlb)/stk < Engine load < 300 mg (0.7 mlb)/stk
- Lambda regulation active
- Canister purge valve not in close state
- Catalyst purge after fuel cut-off finished
- Stable driving condition
- No relevant failure
- Battery voltage > 11V
|
|
| Threshold Value |
- Averaged malfunction index > 0.47
|
| Diagnostic Time |
- 120 Lambda controller cycles, continuous
|