| DTC Strategy |
- Signal plausibility with lean mixture (during fuel cut-off)
|
- Poor connection or damaged harness
- HO2S contamination
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| Enable Conditions |
- O2 Sensor operative readiness
- O2 Sensor preheating and full heating phases finished
- Battery voltage between 11V and 16V
- Integrated mass air flow since last fuel cut off greater than 500g
- 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 |
- Downstream HO2S greater than 0.2V during fuel cut-off phase
|
| Diagnostic Time |
|
| Mil On Condition |
|