Diplomat Dishwasher ADP8352 Will not complete wash Cycle

Water will drain on initial start up and will Pump into unit as part of the cycle then stops you can hear the pump as if siezed. Inspection of the proved pump free to turn pump capacitor checked good. after inspection and returning Dishwasher to upright position it went through full cycle without a hitch. on second attemp dishwasher failed produced same symptons. Could this be a fault with the Control PCB