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 when the following condition is met:

With the engine running.
Engine coolant temperature between 30°C and 100°C (86°F and 212°F).
Air Bleeding procedure has been performed.
The Powertrain Control Module (PCM) is commanding maximum fuel flow to the High Pressure Fuel Pump for a specified time.