My two drawer dishwasher keeps turning itself on.

There is a leak in the unit. What you'll have to do is to take the bottom drawer out of the casing and you'll find water in it's casing. The computer in the unit is detecting a leak and is trying to empty. Take the bottom drawer out by pulling the drawer out gently and disengage it from the side rods just like you would when you take out your drawers in your refridgerator. When you are able to lift the unit out (you may want someone to help because it can be heavy) you will see the tubes attach but look in the casing that holds the entire unit and you'll probably see some water. You'll have to dry the water out before putting the drawer back. If this still occurs then that means the computer board needs to be replaced because it's probably damaged from the water leakage.