New Micra lost power and screen showed system fault. Could the problem be when the learner driver stalls and switches on by not bringing the key back to the start position or could it be switching on if the in/off automatic system is on? This system doesn’t always come on when the car stalls.

Thanks.

Not sure, but worth experimenting with switching the engine on and off using different methods to see if this invokes the fault.

Also, if the battery voltage dips too low by constant restarting then this could also be an issue.

Maybe worth turning the stop/start function off also to see if that resolves the issue