Your dishwasher may be blinking if the door was opened during the cycle or power was interrupted. Push the door closed firmly within 3 seconds of pressing the Start button to prevent this from happening.
Lights may also blink on the control panel if the dishwasher was set for a Delay Start and the door was unlatched. The lights will stop blinking and the Delay Start cycle will begin after you’ve pressed the Start button and fully closed and latched the door within 3 seconds.