| DTC Strategy |
- Slow response (Switching time check at entry in fuel cut off)
|
- Leak in intake or exhaust system
- Faulty fuel system.
- Front and rear HO2S connections reversed.
- Contact resistance in connectors
- HO2S contamination
|
| Enable Condition |
- Coolant temp >74°C (165°F)
- Closed loop mode
- 5km/h (3mph) < Vehicle speed < 180km/h (112mph)
- Sensor preheating and full phase finished
- Catalyst temp.model >350°C (662°F)
- No relevant failure
- 11 < Battery voltage < 16
- Downstream O2 sensor signal at entry in fuel cut off > 0.55V
|
| Threshold Value |
- Average ratio (between measured and maximum allowed switching time at entry in fuel cutoff) > 1
|
| Diagnostic Time |
|
| Mil On Condition |
|