When Monitored

WARNING: This page is about a different car, the 2017 Jeep 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,
Battery voltage between 10.5 and 15.75 volts.
Auto-Shutdown (ASD) Relay powered on.
DTC P0038 is not active.