You have a flooded belly pan at floor level which activates a float switch and triggers the E2 code. This is not the main cabinet area, but a hidden area under the machine.
Isolate the mains power, then take off the front panel under door and see if you can mop up the water you will find there. You can also pull out the dishwasher and tip it backwards to empty the water out. This will probably solve the issue on a short term basis as it sounds like you have a leak which will need attention to avoid this happening in the future
Rupert, June 2020
