Not sure what you have checked so far, but here are some things I would check.
Check the float inside the dishwasher to make sure it moves up and down freely.
Check for power at the junction box at the bottom of the dishwasher.
Check the fuse on the control panel for continuity with a multimeter.
Your dishwasher uses Fuse Part # 8193762
I have attached a copy of the tech sheet for your model dishwasher.
It includes a wiring diagram along with a lot of other information.
Hope that helps.
Let us know how you turn out.