When Monitored
WARNING: This page is about a different car, the 2023 Jeep Grand Wagoneer. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic runs when the following conditions are met:
- No other O2 Sensor circuit faults active.
- There are several different catalyst efficiency monitoring windows. Each specific window has several different enable conditions. The best opportunity for the catalyst efficiency monitor to run is:
- Engine temperature above 70°C (158°F).
- Engine speed between approximately 1000 rpm and 3000 rpm.
- Vehicle speed between 20 mph and 85 mph, under moderate engine load.