Eng voltage alarm

I was running the boat and the following voltage alarm come out. I am having issue with my trim sensor which are moving up and down on its own, I am wondering if the trim sensor are causing this alarm. i also wonder if anyone have this voltage alarm before, or see it. any ideas will be appreciate. Thx

Comments
I would also check the 90 amp fuse at the starter and either clean it or replace it. I would also check the 21 pin connecter to be sure its tight and that the pins are clean.
I have had that fault in the past and it seems if i trip the circuit braker at the motor and then reset it the code goes away. Let us know what you figure out and the solution