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:

With the engine running.
No Engine Coolant Temperature (ECT) Sensor or Exhaust Gas Recirculation (EGR) Temperature Sensor DTCs active.
EGR is commanded on.
Engine is at operating temperature.