Question about Bosch 24 in. SHY66C02 / SHY66C06 Built-in Dishwasher

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Bosch shy66c06 overflow pan has water in it

The presenting symptom is that the drain runs constantly (even with the door open), and the DW won't fill. Macmarkus wrote a post on how to test the overflow switch actuator (the little red stick) - his underlying assumption was that there was no water in the pan. What if the switch actuates because there IS water in the pan? What things should be checked? So far, we have replaced the pump assembly, a short hose going to the pump, and then the door gasket. We have watched as it fills, and can't see any drips. The float is up because of the water in the overflow pan - it's doing its job properly. Mining the suggestions on FixYa for what to check next, we find (1) all the gaskets and O-rings in the pump assy, (2) the inlet, components, (3) the drain hose for congealed fat or other obstruction. The DW has at least 6" behind it, so we don't think the drain hose is kinked. As long as my husband has to tear the machine apart, what else should he look at? Thanks in advance.

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6 Suggested Answers

  • 2 Answers

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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Posted on Jan 02, 2017

silly girl
  • 513 Answers

SOURCE: Bosch Dishwaher shy56a

Certainly sounds like the float is stuck in the over filled position or possible a bad float switch. Could also be a bad water fill valve - if you can blow air through it when removed then you need to replace it. You can follow this link to troubleshoot your washer, but note that its not exactly for your model - Good luck!

Posted on Mar 26, 2006

  • 1 Answer

SOURCE: Bosch SHU9925UC Dishwasher Stuck in Initial Drain Cycle

OK Bosch Dw is the fix if your SHX dishwasher is stuck on the drain cycle. This may save you a couple hundred listen up. There is a tendency for the very small float switch to STICK in the ON position, which will cause the drain motor to continuously run......and DISallow any other function to work. DISCONNECT POWER. Did I mention to disconnect power? Take off the front base cover....2 torx screws. Remove the other 2 torx screws in the metal clips that fasten the top of the DW to the underside of your countertop. NOW...carefull slide your DW out. You may have to disconnect your water and elec supply if you do not have enough slack to pull it out. Once the DW is out of the cabinet, remove the shiny metal cover on the LEFT side by removing a single torx screw. You will now see a small plastic assembly with a red plastic piece that moves up and down as it rides on a small red styrofoam float. This up and down movement engages a small white plastic switch visible with 3 wires coming out of it. You can carefully UNSNAP this switch out of its mount, and pull the 3 wire plug off of it. THere is a small square blue plastic tab that is supposed to easily slide in and out of the switch. If it is stuck IN, you can sometimes tap the switch and the blue tab will pop out, which is what it is supposed to do without tapping it. You can carefully with a knife blade separate the case on this switch and note the way it comes apart. Clean out any micro debris out of the small channels that the blue tab ride up and down in. Then set it in the channel while holding up the small switch tab that rides on it and see if it slides up and down without sticking! I like to take a piece of wax paper and rub in on the channel and blue tap to provide some lube for the switch to slide easily on. Now, put the switch back on and manually move the red plastic assembly up and down while you are watching the blue tab. The tab should ride up and down with the red assy. If not, buy a new switch. Google the # on the switch and order one. If the tab slides up and down, put things together in reverse order and give it a try. Hope it works for you. This should take you an hour give or take. Take the $200 you just saved and have a night out on me. even though these German Appliances have a good name because of past reliability, the american tendency to value engineer them with plastic parts to reduce costs and increase profit.........just cost you an hour of your time. Will we ever learn.? ......if it ain't broke, value engineer it until it only lasts through the warranty period so you can then collect service and parts blood money from your fellow american.

Posted on Jan 11, 2009

  • 1 Answer

SOURCE: Bosch SHU 4000 series dishwasher; Water keeps on filling

Follow-up: I was able to fix the problem on Bosch model # SHU 4002UC. Purchased water inlet valve (part number 425458) from Sears Parts Center. I required the Sears unit number from the original invoice as Sears computer system apparently cannot identify the Bosch model number. The valve is as described by meyerjr above; however it is located at the bottom front of the machine so could be replaced (not so easily) without removing the machine. Cost of part was $30.50 Cdn including tax.

Posted on Apr 20, 2009

  • 205 Answers

SOURCE: Bosch dishwasher: won't fill with water

The flood switch is tripped. This is located under the unit. Unplug or flip the breaker to the dishwasher, take off the black kick plate under the door, 2 screws, and you will see the white plastic "pan". The flood switch is located where you can't really see it but it is on the left hand side wall and is made of styrofoam. The best thing to do is to put some rags in the pan, this is not easy because there is little room to put them, and soak-up the water that has filled the pan. Eventually you will get enough water out that the float will deactivate the switch. What you hear "running" when you turn it on is actually the drain pump, it get activated when the flood switch is tripped.

Posted on Jul 21, 2009

  • 2605 Answers

SOURCE: My Bosch shu3307uc pumps out all the water at the

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 :)

Posted on Sep 27, 2011

Testimonial: "The fix was easy and exactly as described, and works perfectly! Thank you very much! If you need any car advice, look me up, I will be glad to help! Bob"

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2 Answers

Motor runs with door open. No water in pan.

Sounds to me like there may be water in the moisture sensor. Your dishwasher is probably leaking and the noise you hear is the drain pump activated.

Apr 02, 2015 | Bosch SHV46C03 Built-in Dishwasher

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Bosch shy66c06 doesn't turn off when door opened

This is a partial solution. After reading lots of other similar descriptions (none of which were automatically identified by FixYa, btw), we realized it was probably water in the 'catch basin' or whatever that pan (white plastic) below the sump pump is. Sure enough, there was about 1/2" of water in the pan. We hoped that by overriding the float switch and watching it run through a cycle, we would be able to see where the leak came from. Unfortunately, running a rinse & hold (10 min) didn't do it, so we are about to run it on a quick wash (56 min). To do this, we have left everything connected (power & water), and removed the toe kick cover, to give us access to the works below the main compartment. A long chopstick works well to get at the red float switch actuator; we used two of them to dip a washcloth in the water to soak, and then remove the washcloth and wring it over a bowl. Slow, and tedious. But the alternative was to do the 3 hr teardown just to get the pan dried before we could run it through a complete cycle. We're still hoping this will let us see the leak.

Jan 11, 2013 | Bosch 24 in. SHY66C02 / SHY66C06 Built-in...

1 Answer

It won't stop washing, after a while the diital screen flashes "F3"

Hello Matthew, welcome to FixYa.

To address your post of the washer running a long time and eventually displaying an "F3"...they are directly related. These will not spin until they drain sufficiently.

The F3 indicates an issue with the drain, pump filter, or the pump itself. There is typically a drain filter in the pump as you may or may not know, based on your description it may be clogged. You'll need to access it, clean it out via draining it through the pump "emergency drain hose" before you can in the end open the door (though usually once drained to a safe level it will open under normal procedures) however there should be a door lock release on Asko built machines...including this series you posted

**This is the procedure for machines of the past 10yrs. or so...(this is only an example, it may not be exact but essentially the same as yours as well as most W600 or 6000 series)**

Hopefully this will help. Let me know if anything is unclear or If I can assist you going forward. Thank you for choosing FixYa and good luck going forward.


Macmarkus :)

Dec 18, 2011 | Asko W6021 Front Load Washer

1 Answer

Good Morning Macmarkus, I was told you posted a solution to my problem on 08 SEP 2011, I did not see it. Here is my problem: My original question has not been answered, I have a GE top load washer,...

Hi Ron,

Just happened tocome accross this post randomly...I did indeed reply to your post on a previous day. Are you not able to continue with thast post ? I'm not clear on the reason, though it doesn't matter, just pick up from there.

The issue with your washer has all the symptoms of a faulty lid switch is what I had posted previously, but I wasn't sure at what stage you had reached in diagnosis.

Here's the explaination in the teardown/service manual...If the lid switch Is open, agitation and spin will not occur, but the washer will continue to count down, fill with water and drain at the appropriate times in the cycle...sounds like a perfect summary of your symptoms.

I realize the type of lid switch these units use or as you called it a magnetic sensor (sometimes referred to as a "reid switch" aka fancy word for magnet) as shown here...

If you do not have motor action present at anytime no matter where the cycle is, I'd be suspicious of the lid switch. The other component failing which can manifest in this manner is the 10 amp fuse on the neutral line...example:

As you can see there are a couple possible scenario's that may prevent the motor from operating, but I'd start with the fuse and lid money is on the fuse (I shouldn't gamble...I see too many lid switches too, lol)

Let me know what results and that will at least get us moving forward again. Good luck. I also have the service manual as I mentioned. If you post your email address when you reply Ron, I'll fire it off to you.


Macmarkus :)


Maybe check your other post as I will add this info there as well to see if it is working. I know there have been some "glitches" here recently at FixYa. I apologoze for that.

Sep 12, 2011 | Washing Machines

1 Answer

Hi I keep getting an error message "F27" on my

If the overflow contact on the pressure switch is closed for more than 60 seconds, an Overflow Condition occurs. In an
overflow condition, the door remains locked and the drain pump runs constantly, even if PAUSE/CANCEL is pressed twice and the display is cleared. Turn off hot and cold water faucets and unplug the unit before servicing.
1. Check the drain hose and make sure it is not plugged or kinked.
2. Unplug washer or disconnect power.
3. Check wire harness connections to the drain pump, pressure switch, water inlet value, and Central Control Unit (CCU).
4. Check/clean drain pump filter of foreign objects.
5. Check for drain pump failure.
6. Check the inlet valve for proper shut off.
7. Check the pressure switch for proper operation.

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1 Answer

Hi my F &P dishdrawer unit (DD603) won't drain

Dishwasher not draining issue usually occurs due to kinked drain pipe, clogged drain filter or drain pump. First make sure that the drain is not clogged and remove clogs if present. If no visible lint is present then remove the lower front access panel to check the drain filter and drain pump for any clogs, you'll need to clean the drain filter and drain pump completely. Also, check for any food pieces stuck near the pump impeller & clean the chopper assembly. Please note that dishwashers don't drain out the complete water such that heating element doesn't overheat. Hope this helps... Please post back for any further assistance.

Aug 13, 2011 | Fisher and Paykel Dishwashers

1 Answer

My washer did fill, but won't spin or drain now and the door won't open

Hi tragz,

If it can't drain, it won't spin. There may be something preventing the pump from draining in the Pump filter. You will need to clean it.

Please follow my below Tip on how to do it:


Kind Regards d")

* If this solution helped you, please rate it

Aug 05, 2011 | Kenmore HE2 Plus Front Load Washer

1 Answer

Water will not drain out but the water pump keeps running even when the door is openned or closed.

Dishwasher not draining issue usually occurs due to kinked drain pipe, clogged drain filter or drain pump. First make sure that the drain is not clogged and remove clogs if present. If no visible lint is present then remove the lower front access panel to check the drain filter and drain pump for any clogs, you'll need to clean the drain filter and drain pump completely. Also, check for any food pieces stuck near the pump impeller & clean the chopper assembly. Please note that dishwashers don't drain out the complete water such that heating element doesn't overheat. Hope this helps... Please post back for any further assistance.

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Dishwasher won't run. keypad buttons light when pushed, and I've locked and unlocked the keypad, which seems to be otherwise functioning normally. It has been working fine until now. I push...

Hello, welcome to FixYa. If you can provide the model number (usually on inside of door frame or tub frame around door opening) and make/brand name, I'll see what I can find for you. It does sound like a door switch, but I'll need to clarify the make & model before moving forward. Regards, Macmarkus :)

Jun 04, 2011 | Dishwashers

1 Answer

My Bosch Dishwasher 6800 is not rinsing...after HOURS of running, sometimes the bottom of the washer is filled with suds. I use very little detergent and still have trouble.

Hello, welcome to FixYa.

I'll start by saying your post indicates it is a Bosch dishwasher, however if you could post the complete model number (6800 is incomplete) I can speak directly about possible remedies instead of generalizing.

The one possible problem could be your door switch in the latch assy, hence it present's an error code.

Thank you for choosing FixYa. I'll need to watch for your reply before moving forward.


Macmarkus :)

May 03, 2011 | Bosch Dishwashers

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