Question about Bosch 24 in. SHY56A05 Stainless Steel Built-In Dishwasher

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Bosch dishwasher slowly fills with water after cycle is done

We've been tracking the problem after having a bosch repair person out and didn't find the problem. After the wash cycle is complete, the dishwasher empties out but then slowly starts to fill with water. I thought maybe it was the drain hose but after 24hrs. I have emptied close to 2 gallons of water!! It has to be coming in via the supply line. Any ideas for a fix?? Must be some kind of seal that is shot. Dishwasher is 7 years old. thanks!!

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  • bjohnson1 Dec 21, 2008

    Thanks Smithbrother-I'm going to give it a shot!!!



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Replace the water fill valve, it's leaking.

Posted on Dec 21, 2008


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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How to run self test on bosche dishwasher

Here is an excerpt from "Bosch Dishwasher Troublesoooting".

Running a Test Cycle
Bosch dishwashers have a test cycle which can be run as a troubleshooting measure. The method to run this test cycle is similar across the Bosch dishwasher range so if your dishwasher features seems different from those described below then try experimenting, as the process is fairly straight forward and will be very similar. Bosch dishwasher model numbers are usually found around the top or lip of the door. One of the most common differences between dishwasher models is simply the names of the buttons. For example in the first example below, POWER SCRUB PLUS and REGULAR WASH may be called WASH and ECO depending on your dishwasher model and the country you are in. The other key difference is whether your dishwasher has a display panel (which can display error codes) or not (in which case a program light will illuminate to tell you the fault.
To run the test cycle hold down the POWER SCRUB PLUS and REGULAR WASH buttons. Whilst held down press the ON/OFF button. The lights above them should flash. Now you can check the status of each dishwasher program by pressing its button. Now you can run the full test cycle = Press the POWER SCRUB PLUS and REGULAR WASH buttons again. The dishwasher will start up and when the cycle has ended one, if you have no display panel on your dishwasher model the indicator lights will illuminate if a malfunction was detected as follows -
CLEAN - A temperature sensor fault. If this is the case then the test cycle will be very short as the dishwasher will terminate the test once it's been detected.
RINSE/DRY - A water sensor/filling fault. If this is the problem then the test cycle will not complete as the dishwasher cannot detect the right level of water, the dishwasher will just keep filling and draining again.
WASH - A heating fault. Check your heating element.
If you do have a display panel on your Bosch dishwasher then after the cycle is complete an error code will be shown if a fault has been detected. The error codes are as follows -
0 - No errors have been detected.
1 - A water sensor/filling fault.
2 - A heating fault.
4 - A water filling fault. This can also appear as F on the display during a normal cycle.
8 - A temperature sensor fault.
When troubleshooting your Bosch dishwasher, running the above test cycle is a good start in diagnosing the problem and should give you an idea of where the problem lies with your Bosch dishwasher and what fixes and repair are in order. Our general troubleshooting page will give you some ideas on other things to check on your dishwasher. Good luck!

Mar 29, 2013 | Bosch 24 in. SHU5305UC Built-in Dishwasher

1 Answer

My Bosch dishwasher fills with water but when it comes to the wash cycle it does nothing.

If your dishwasher is brand new, then call Bosch service as they can repair it under warranty.

Feb 26, 2012 | Bosch Dishwashers

1 Answer

My Bosch shu3307uc pumps out all the water at the end of the cycle, but slowly fills the bottom between cycles, even wuth little or no activity at the sink. have checked the drain hose for blockage, but...

Hello, welcome to FixYa.

Based on your post I understand you have a Bosch SHU3307UC dishwasher, correct ? Firther to this stated "slowly fills the bottom between cycles, even with little or no activity at the sink"

It sounds to me like the fill valve is at fault unfortunately. This is a very common problem for Bosch dishwashers of that era.

A faulty fill valve...sticking in the "open" position either due to the plunger in the coil getting stuck or sediment inside the valve body impeding it from closing correctly...Either way you're safer to change it with the history of these valves failing.

This is what to look for...


As long as your model is indeed a Bosch, this info below will be accurate.

Original part is # 425458. It usually retails for about $20 - $30USD at places such as "" "" to name a couple, if needed. They may be available at your local brick & mortar parts depot/vendors.

**Before attempting to repair the unit please turn off the power and the water supply to the first**

If you remove the lower kick plate/toe panel, you will see the inlet valve to your left...



Replacing it or to check for debris in the filter/screen at the inlet is pretty straight forward. Here`s how...

1) undo the water line. ( here you can visually inspect the screen in the valve...if nothing noted, you'll likely need to replace it as follows )

2) Remove the two #20 torx screws fastening it in place.


3) the feed tube to the machine at the back of the valve and swap it with the new one.



Once the new one is in or it's all clear you should be good to go.

Let me know if you need any further assistance. Thanks for choosing FixYa and good luck.

Please take a moment to rate the assistance provided here and a brief testimony on your experience here at FixYa is appreciated as well and tell your friends to look for "Macmarkus" on FixYa should they need asistance as well.


Macmarkus :)

Sep 26, 2011 | Bosch 23 in. SHU3307UC Built-in Dishwasher

1 Answer

We have a bosch model #SHU9902UC. the dishes frequently have a residue after the complete cycle is done. this is alleviated somewhat if the "power" wash cycleis used, but there is still a...

Bruce, we have the same unit and had the same problem. Try using a LOT less detergent. The repair tech claims that the manual says to only fill about 25% full. Also, we tried different detergents and found that the Finish (formerly Electrosol) works the best. Another not so great feature of this dishwasher is that it does not have a disposal unit so periodically clean out the drain pump area to remove any large chunks that the kids didn't feel like rinsing off.
- Bruce

Nov 13, 2010 | Bosch Dishwashers

1 Answer

After the wash cycle dishwasher beeps

Hello, welcome to FixYa. While I don't have access to my PC files at the moment as I am on my iphone, I believe this is the procedure for most B/S/H/ built dishwashers ( that means Bosch, Thermador, Siemens and Gaggenau ). To Enable or Disable the Cycle Completion Signal... 1. Open the door, hold down the ?Quick Wash? button and simultaneously turn the Dishwasher on. The ?Quick Wash? light will blink (program mode). 2. While the light is still blinking, push the ?Quick Wash? button. ? If the machine beeps, then the Cycle Completion Signal has been enabled. ? When you push the button again and it doesn?t beep, it means that the Cycle Completion Signal has been disabled. 3. Turn the Dishwasher off to take it out of program mode. I hope this answer's your question. Thank you for choosing "fixya". Please rate the solution favorably if indeed it was helpful, if not please let me know. Good luck. macmarkus :)

Jul 13, 2010 | Bosch 24 in. SHV4303 Built-in Dishwasher

1 Answer

Rinse agent cycle

Visit Bosch web site and get a user manual. Or tray the authorized service center

May 02, 2010 | Bosch 24 in. SHU66C05 Stainless Steel...

1 Answer

Washing cycle wont complete

I had the same problem. Called the repair man, who said it was a defective control board. He ordered a new one, replaced it and now the problem is fixed.

Dec 28, 2009 | Bosch 24 in. SHU53 Built-in Dishwasher

1 Answer

Bosch dishwasher fills with water after cycle is completed

Sounds like you need a new water inlet valve. It's not shutting off completely, so water slowly enters the machine even while it isn't running.

Jul 03, 2009 | Bosch 24 in. SHU43 Built-in Dishwasher

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