General Information: DTC Detecting Condition
DTC DETECTING CONDITION AND POSSIBLE CAUSES
| Item |
Detecting Condition |
Possible Cause |
| DTC Strategy |
- Check lambda regulation frequency
|
- Leak in intake or exhaust system
- Faulty fuel system.
- Front and rear HO2S connections reversed.
- Contact resistance in connectors
- HO2S contamination
|
| Enable Conditions |
- 400°C (752°F) < Catalyst Temp. Model < 900°C (1652°F)
- Coolant temp. > 76°C (168.8°F)
- 5 km/h (3.1 mph) < Vehicle speed < 170 km/h (105.6 mph)
- 100 mg (0.2 mlb)/stk < MAF < 300 (0.7 mlb)/stk
- Lambda regulation active
- Canister purge valve not in close state
- Stable driving condition
- No relevant failure
- Battery voltage > 11V
|
|
| Threshold Value |
- Average ratio between measured and maximum allowed frequency during 100 lambda regulation cycles > 0.66
|
| Diagnostic Time |
- 100 lambda controller cycles. Continuous
|