E4 error on new conia dishwasher

Had the same problem. First you will need to tilt dishwasher back 45 degrees and tip out all excess water. A couple of towels on the floor are a good idea.

Second check that the little nozzle on the elbow under your sink where your overflow attaches is drilled out.

This fixed my problem after fussing around for a day and I was starting to disconnect everything to take it back.

I have a Maytag MJD3000AAW dishwasher and it was showing E4 during a cycle. On checking the pressure tube from the outlet of the dishwasher to the nozzle on the u tube under the sink, I fould that the dishwasher was not draining properly as a kink have developed in the tube where it curved back to the nozzle. I slid the pressure tube into a long elbow which stopped the tube from pinching. Problem solved.