Flashing 'normal wash' light - won't start

Hi All,

When I try to start the dishwasher, the ‘normal wash’ light flashes after I press it. While the light is flashing, no other control will work. The ‘normal wash’ light will continue to flash forever. If I cut power to the dishwasher, sometimes it will reset and allow me to run a cycle, but often this problem will repeat.

Is this condition more likely a control board or a panel failure? What would be the best troubleshooting steps to isolate the problem?

Thanks for your help!