Nissan LEAF 2023 Owners Manual
6.5.6. System Malfunction
If the TSR system malfunctions it will be turned off automatically and the [System fault] warning message will appear in the Vehicle Information Display.
Action to take:
If the [System fault] message appears, pull off the road at a safe location and stop the vehicle. Turn the EV system off and restart the EV system. If the [System fault] message continues to appear, have the system checked by a NISSAN dealer or qualified workshop.
Owners Manual