If no fault, it must be some loose connection or blown fuse. If all those things are fine, i suggest get the computer check and read the code for fault and take action.
Clear the code and start the vehicle if light again comes back same moment or in a day, then that fault code is right and you need to change or fix that part. if it doesn't come back, so don't bother and enjoy as it was due to some electrical problem that light came on and you cleared it.