So I went online and ordered the drain pump and case (came together, pump alone is more expensive for some odd reason).
I hooked everything back but the code still came up. I thought it might be causing issues so I removed that. I also checked the flap valve, it had a clear plastic piece right behind it. The pump assembly didn't have any major obstruction aside from couple of hairs. I used vise grip pliers to take the clamps off.
It took me a while but I managed to do it. To take it out I had to take off two clamp. It was a challenge to work around it with very little space. I took the plate off and noticed that pump is accessible. Since I don't have a new pump yet I didn't feel like pulling the unit all the way out so I tried to remove the drain pump and casing from below. So my next mission was to check the drain pump. So since water is coming out I don't think the drain is plugged. When I press normal and delicate button together the drain pump kicks in and expels the water out. As of now it stops the washing cycle and leaves some water on the bottom of the dishwasher. I removed obstruction and cleaned the filter but the code kept coming up. There was a small piece of plastic stuck at the junction and filter was pretty dirty. After it came up first time (4 years after we bought the dishwasher) I checked the filter and drain hose where it connects to garbage disposer. Well here is another guy struggling with same OE error code. Can anyone explain why it would drain when it was low but stop when I raise it? Is the technician right and I have a clogged hose? When I lifted the hose up to the height of the dishwasher drain, the water stopped coming out. The water came out of the dishwasher into the bucket and filled it up. After he left I took the drain hose off of the connection to the garbage disposal and put it in a bucket then I ran the dishwasher.
It would cost me $260 to fix the hose, plus my cost to remove the laminate. He told me it looked like the drain hose was clogged because when he blew on the drain hose he didn't see any bubbles. The technician looked at it and told me that I needed to remove my floor in the kitchen so he could pull the dishwasher back and look at the drain hose. I called a company to come out and take a look at it. Starting this week, my dishwasher started giving an OE error code every time I ran it. I would always restart the cycle and it would complete with no problem. When I first started using the dishwasher I noticed occasionally I would come back and see error code flashing on the dishwasher.