Re: Neff 5453X0GB/13 dishwasher overfill
I’ve had a similar problem and it was the seal under the door. Remove the door outer skin and the seal spans the gap between the bottom of the door and the tray. The machine I saw had a distorted seal and it had popped off the lip of the tray.
I’ve had several Bosch machines with torn or split ones as well. (They are “entertaining” to fit – best way is to release the spring before removing the old seal: doing the job with a sprung – loaded door is like wrestling an alligator).
HTH,
Steve.