I Googled the issue and found several articles claiming that the Control Module was the issue. Even reviews on this site make the same claim. The control module showed up in a few day and it took me all of about 10 minutes to swap the part. I used a torx bit to remove 6 screws, then the cover snaps off and the module comes out easily and the various electrical connectors are easy to remove. When putting it back together, don't forget the module cover like I did. :) So far the dishwasher is running perfectly, so the shutoff issue appears to be resolved.