If you do have hair in there, it has to come from somewhere. So, that would be my first thing to investigate. What kind of hair is it? Human or animal?

Other than that, look through this checklist: http://www.appliancehelponline.com/miele.html Maybe, there is a suggestion you haven't tried yet.

In our case, we had a very mysterious failure that manifested in F11 errors (so, presumably different from yours). Turned out that the gasket in the backflow valve had deteriorated just enough to become slightly sticky. It wasn't noticeable during manual inspection. But replacing the valve permanently fixed all issues. I am sure it's something similarly silly and basic with your dishwasher. You just need to figure out which component is contaminated and is causing this behavior.

Human hair and it's the circulation pump. And I get that it has to come from somewhere but how do you stop it? I clean it weekly and it's not like I'm finding a tonne of stuff in the filter. I pull hairs out whenever I find them but seriously. And the fact that I never had this issue for 1.5 years and now it's constant I'm starting to wonder if it's something else. And I did what he suggested to clear the pump and there's still a bit of water under the filter. Is this normal? (The technician literally just left).

All dishwashers retain some water in the sump. The drain pump can't push 100% of it out. The same for washing machines.

Yes, a little bit of water is normal. Larger amounts of water or dirty water could be an indication of backflow. But that doesn't look like it in your picture.

Do you know how to remove the backflow valve in order to get access to the impeller? Is that where you clean out the hair?

I know how to pull the back flow valve but the hair was in the circulation pump. This is what killed it.

You can’t access the pump internally. I’ve cleared the impeller before but I want to know how to stop this (maybe two or three hairs) and some “fluff”.

That's a lot of hair. I can see how it would do damage. But I'm puzzled how it would get into your dishes without you noticing. When you solve the mystery, please post a follow-up question. This sounds like a really unique and interesting issue.

But shouldn’t it be captured by the screen? Honestly it’s like two or three hairs and fluff. And I was a year + without any of these issues. Three pumps now since September. Same issue. I’ve been militant since the first pump was replaced.

Test

Did a remodel replacing our old Miele dishwasher with a Futura. The new Futura blew its pump after four years. Our prior Miele was 20 yrs old and worked great. Seen a lot of posts with pump problems. Repair guy says cost of repairs around a thousand bucks. Repair guy also said part number on pump has changed possibly due to Miele trying to get it right.

did you figure it out? im wondering if things are getting in there from my garborator, draining back down the drain pipe from my sink into the dishwasher.

For Miele dishwashers, there is a backflow valve that is supposed to prevent this from happening. That's why you don't need an air gap when installing a Miele dishwasher (some jurisdictions still insist on it though). You should have a high-loop though. So, that would be the first thing to check. Look under your sink and see where the drain tube goes. Does it go up from the garbage disposal and then down again to the dishwasher? If not, that's the first thing to fix. If you have an airgap (the little nub next to the sink), open that one and check that it has no obstructions.

If all of that looks fine, check the instructions for your particular model to see how to access the backflow valve. For my model, it's inside the sump on the left-hand side. If I push a little tab, the valve lifts out. It has a big steel marble and a gasket. There should be no visible contamination and the marble should move freely. The gasket it harder to inspect. After a couple of years it can age and deteriorate. That's not always obvious. The best indication is that the sump always has lots of water in it (small amounts are normal, though).

When that happens, you should consider buying a replacement valve. I don't think you can buy just the gasket. When I bought mine, it was somewhat overpriced at about $40, but since that fixed all my problems with failure to drain it was worth it. Also, it's nice that this part is user-serviceable. So, no labor costs for a change.