Alright !

I know most of the old crown forklifts up to 2014.

Thanks LaGrange, your the man. I found a loose connection on one of the batteries, its working flawless right now. Appreciate your help.

Inspect the chassis power cables that plug in to the battery connector.

Thanks for your reply. It is happening sporadically while moving, and lifting or lowering doesnt seem to have any affect on it at all.
Ive gone through and tightened all possible connections, but nothing seems to help the condition.
I am also getting an 857 code once in a while.

Any suggestions would be appreciated.

Does it shutdown while driving ?

While lifting or lowering ?