Enabling Conditions
| Overlap prohibited DTC | None |
| Battery voltage | 10.9V or more |
| Sub-feedback | In operation |
| Intake air amount | 10 g/s (0.35 oz/s) or more |
| Estimated temperature for rear oxygen sensor element | 450°C (842°F) or more |
| Air fuel ratio subtracted from the target air fuel ratio of the executing condition with interrupt control | Value of map |
| Duration while rear oxygen sensor output voltage is less than 0.55 V | 10 seconds or more |