When Monitored
WARNING: This page is about a different car, the 2025 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic runs continuously when the following conditions are met:
- The O2 Sensor heater is commanded on.
- Battery voltage between 10.5 and 15.75 volts.
- DTC P0031 is not active.