As you know around the dishwasher I can give you some troubleshooting steps an engineer would tool (if called out).
I assume you have checked the inlet hose isnt crushed and is getting water (not shut off at the service valve)
Start by checking the voltage your getting to the inlet valve, is it actuating the valve?
If its not, you need to identify which sensor is at fault, the two obvious ones would be the flow and flood sensors.
Next you need to consider a possible control board failure, as if its getting the correct inputs but not calling for water then its a logic issue, and a replacement board is required.
Let me know how you get on
I havent heard back from you in the last day or sp, and just wanted to check if you still require assistance, I would appreciate it if you could rate the service received.