When Monitored
This diagnostic runs continuously when the following conditions are met:
- Engine run time greater than one minute.
- Engine coolant temperature above 65°C (149°F).
- Upstream O2 Sensor in closed loop operation.
- Engine speed above 2016 RPM.
- Vehicle speed above 88.5 km/h (55 mph).
- Catalyst temperature between 600°C and 800°C (1112°F and 1472°F).