| 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.
- Poor connection or damaged harness
- HO2S contamination
|
| Enable Conditions |
- O2 Sensor operative readiness
- O2 Sensor preheating and full heating phases finished
- Battery voltage between 11V and 16V
- Mass flow integral out of pull cut off phase greater than 100g
- Downstream O2 sensor readiness detected
- Catalyst temperature model higher than 400°C (752°F)
- Exhaust gas temperature model at sensor location higher than 400°C (752°F)
|
| Threshold Value |
- Average ratio between measured and maximum allowed rich to lean switching time entering fuel cut-off more than 1
|
| Diagnostic Time |
- 3 valid fuel cut-off phases
|
| Mil On Condition |
|