What causes door to open during cycle

call a local repair service if it is old then plan to replace it

I would check how level the dishwasher is. Might need to adjust the feet.

If the door latches correctly at the time of wash then it is possible that there is a false trigger to release the door, if so you need to check on the lock.
check on this link for tips: Door lock

those have a 2 latch system, sounds like the second latch that engages during the spin cycle never quite completed the safety lock , you could try and jumper the latch to see if that would release it, But it seems the secondary latch wasn't working properly in the first place, even the heaviest loads shouldn't pop the door open,

try locking your settings by pressing your locking button for 3 or 4 secs till the red lock shows.and see what happens..it might work..good luck

I am an experienced techician and have tried all these solutions in the past sometimes at no avail. But replacing the tub which has a limited lifetime warranty along with hinge arms will solve the issue. This has such a margional clearance I can never see anything visible causing the door to pop open

I have the same problem and it appears that everyone else who has replaced the door seal runs in top this issue. This is a new seal design that is different from the original. This new seal is obviously poorly designed is placing too much pressure on the door causing it to either not close, or open mid cycle. I am presently duck taping the door closed when running the machine in the hope that the heat cycling the new seal will eventually cause it to deform and relieve the pressure. I see that other have attempted to help the process by increasing the release pressure on the latch. This will be the last Kitchenaid large appliance I purchase.

Sometimes unplugging it for a few minutes will cause it to reset itself. Also, if that doesn't work, when the power is back on, try pressing and holding the power switch for about 30 seconds.

this is joyce
What I would do in this situation is fix the door lock first before I would do another load of clothes. you can go to Kenmore.com put in your model # and download your manual to your machine if you want to fix yourself
or you can call service tech out. I will help you find one in your area if you need.
thanks,
joyce

I would say that based on your problem description that the lid /door switch has a loose or faulty contact .. If you open and close it a few times..it starts to spin and yet when you open it.. it doesn't always stop the spinning.. It is either the switch or the actuator that bumps that switch.. That is where I would begin diagnosing the problem... Hope that helps..