That happened to us on the 10 year mark. All new appliances when we built then the 10 year hit with appliances, the garage door, the septic, the pump and on.
The dishwasher would not power on the other day. Husband flipped the breaker a few times and no go. I told him to take the front little panel off by the floor to see if the wires were loose. He didn't want to damage so he stopped by the local place we buy our appliances and the repair man told him to take the little panel off and check for loose wires. Yep, that was the problem.