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Bosch Dishwasher E 25 Error Message

This is a completely non-medical post that will be of no interest to 99% of the regular readers of this blog (maybe a little interest if you want to see how I fixed my dishwasher), but I wanted to put it up for the search engines to help anyone try to fix had the same problem that ate up a few hours of my day.

When our previous dishwasher died on us last year, we spent a little more money on a Bosch dishwasher. So far, haven’t had too many complaints about it. On the pro side, it is quiet and it gets the dishes quite clean. There also isn’t a water jet spinning around above the top rack, so you can fit larger items up there. On the con side, there isn’t as much space for plates on the bottom. We have trouble fitting a day’s worth of dishes from our 6 person family inside. And there’s no way you’ll get a large pan in there unless you take up the whole upper rack. So I wouldn’t recommend a Bosch dishwasher for a larger family.
The warranty on our dishwasher was for 12 months. Unfortunately, a problem developed at 15 months. Every time the dishwasher started up, it would run for a little while, then it would stop and flash an “E:25” error message.
Mrs. WhiteCoat called the service line. The “E:25” code meant that there was an outflow blockage of some sort. For a minimum $125 charge (not including parts and labor) they could send a technician out in about 5 days.
I like working with cars and other mechanical things, so when I got home from work, I figured that I would take the dishwasher apart and see if I could figure out what was wrong.
I pulled apart the drainage apparatus from inside the dishwasher. There was a lot of sludge and debris there. That could be blocking the flow of water. Mental note to clean that stuff out more often. Cleaned everything out and reassembled the drainage apparatus and started the dishwasher. Still got the same error message.
So I *turned off the electricity to the dishwasher at the breaker box first*, then I pulled the dishwasher out from under the counter. In the pictures, the dishwasher is laying on its right side. I removed the clamp on the drainage hose and let the water inside drain into a plastic bowl. Then I tried blowing through the drainage hose, figuring that if there was a blockage between the hose and the sink, I wouldn’t be able to blow air through it. Air went through the hose fine. I put my hand around the edge of the hose so I wasn’t getting slime in my mouth and it still didn’t taste very good, but air went through the hose fine. So I knew that the problem was with the drainage motor or the impeller.
I pulled off the drainage motor by prying up a couple of clamps on the side and twisting the housing. Inside, I found the problem. There was a chip from a piece of a plate stuck in the drain.
I pulled out the chip, reassembled the drainage motor assembly, turned back on the electricity, and ran the dishwasher through a cycle. No more error message. The chip from the plate was too large to pass through the drainage pipe and was either causing the water to back up or it was blocking the impeller and keeping it from spinning.
Hopefully this little description helps someone else out there. If so, please leave a comment in the comment section.


  1. I did not write a email wanting anything done.

  2. Thanks, Dr. Whitecoat. Thanks to you, I discovered I had similar problem. I was able to reach the impeller and discovered the prong of a plastic fork jamming it up.

    V. Williams, MD

  3. My dishwasher was acting up last night. It wouldn’t cycle and would constantly beep when the door was closed. From inside the dishwasher, I took the filter off and found a grape stem in the pump impeller. It worked fine afterward for one cycle.

    Now today it refuses to cycle again and now gives the E:25 code. I will take it one step further and take it apart from the bottom like you have and hopefully find a similar problem to yours.

    Thanks for the help and the pictures!

  4. Have had a bosch for several years. yes its quiet also the most finicky daggone thing ever. Sears unit was louder but lasted ten plus years.
    No more bosch ever again. This has happened so often as to be a serious PITA.

  5. Seems to have solved our problem. In our case it was a rubber band which somehow wrapped itself around the impeller. Thanks very much!

  6. I followed your instructions 1 year back and had a piece of glass stuck in the impeller. Cleaning all out fixed that problem but only for a short while.
    Now the problem is back; E:25 message while it is trying to pump out the waste water. I disassembled the pump and the pump is clear this time. The interesting thing is that I can reset the dishwasher (turn it off, turn it back on, press START on any cycle and then press and hold start button until time goes back to 0:01. This will pump all the waste water out). Once reset all the remaining water will be pumped out without problem, so it cannot be clogged drain or a blocked pump.
    What can it be? Any suggestions? An electronic issue?

    • I’m working on my now. Same problem. I removed the discharge hose at the sink drain. Put a plastic bag over it. Poked a hole in the bag with a screw driver. Stuck the nozzle from a can of computer “air” cleaner and blew air into it. The bag served as a seal and allowed the pressure to build up. Within a second or two it backwashed all of the water in the hose and it blew along with a lot of crap out of the hose back into the hole where the filter goes. I was able to clean all of that out pretty easily

  7. Nice writeup on the error message. We are in the parts business and we often see customers order parts based on an error code instead of investigation the actual cause of the problem. Often times the repair doesn’t even need a part replaced to remedy the problem. If you ever find something in the impeller of the pump make sure to inspect the impeller for any damage while it is apart. If any of the blades are damaged then you should replace the pump.

  8. My impeller turns fine with nothing clogging it but I still get E25 code? help??

    • Try checking the drain hose from the dishwasher into the sink. Detach it from the dishwasher and blow through it. If you can’t, then there’s something blocking the hose that is causing the error. If air flows through the hose, then probably time to call the repairman.

  9. Kieran M Donahue

    random google search find. I assume you are a doctor. I appreciate you diagnosing my exact problem. Wife likes to break glass cups. So glad it was that simple.

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