Whirlpool wdta50sakz pump

Hello there Gang.

I have a dishwasher causing me some headaches.

Model number is a WDTA50SAKZ3. I am getting an occasional drain pump error.

I have repeatedly pulled the pump and checked it. I even replaced it once.

Drain lines are free. Sump is clean etc etc. When it happens it actually won't drain water (but, you can hear the pump buzz), if you shut it down for an hour or so it works again.

My current thoughts are the control board, but I thought i would run it by you folks and see if there are other ideas out there.