20 Most Recent Bosch 23 in. SHU33A Built-In Dishwasher Questions & Answers

I have the same problem on my Bosch dishwasher Model # SHX33A05UC. It is about 6 years old. I have replaced three gaskets and it did not solve the problem. I am a 25 year mechanical engineer. I do not recommend anyone changing these gaskets on their own except for the long dishwasher door gasket (which goes along the top, left and right door edges) which is quite easy to replace. The other two gaskets, which were quite difficult to replace, were the gasket at the bottom of the dishwasher door and the sump pump gasket. I am still having the tar like black tiny dots depositing on my plastic tupper wear on the second shelf. I will likely not buy a Bosch dishwasher ever again. I will make my decision after hearing what Bosch tech support has to say about what I need to replace next. Could it be the rubber drain check valve not operating correctly? I need to find out. I have spent so much time trying to solve this black tar dot problem!!!

Bosch 23 in.... | Answered on Jan 10, 2016

Most do. When the dishwasher is operating, they can get to around 85 to 95 degrees which is far hotter than usual sink hand washing temps. The insulation and liners on the cabinet of the dishwasher give off a "hot" smell when they get to full temperatures.

Bosch 23 in.... | Answered on Mar 16, 2015

this is suposed to ocurr for the first 3 minutes of every cycle , this step was added to dishwashers of late because everyone seems to wrinse the dishes off first ,adding a lot of driping water to bottom , so it's just pumping it out thats why it's so important to use the detgerent dispensers and not just dump it into bottom

Bosch 23 in.... | Answered on Feb 18, 2015

Do have the manual? Look it up or unplug it

Bosch 23 in.... | Answered on Jul 08, 2014

Hi, I would start by first shutting off the breaker. Then removing the kick plate ( access panel at the bottom ) and checking the wiring at the junction box for the dishwasher 120vac supply line. This is actually quite common to find a wire connector come loose due to improper fastening and once the unit is in use for a while the connections heat & cool, become loose from normal operating vibrations and burn up from all the added heat caused by "resistance". The end result is no power to the controls. Check it out and post back what you find. Thanks for visiting "fixya" and please take a moment to rate the solution/suggestion provided here for you. Good luck. Macmarkus :)

Bosch 23 in.... | Answered on Mar 02, 2014

You have not put the full Enr, but from the bit you have added I assume you are in the states. I think you should be able to get parts from

Usually if the control panel breaks on this model, it is because you have the child lock activated on the door latch inadvertently and therefore have to force the door to get it open. This in turn puts stress on the panel which will eventually break. When you get the new panel ensure that you remove the child lock from the door latch. If you take off the front fascia panel and look at the door latch (centre top) you will see a yellow lever attached to it with a spring, just pop this off and you will immediately find that the door is much easier to open.
All the best.

Bosch 23 in.... | Answered on Apr 19, 2013

Here is a tip that will help you to find out why water will not come into thedishwasher...

Dishwasher Trouble No Water entering Dishwasher


Bosch 23 in.... | Answered on Jul 28, 2011

Hi prism..... The most common cause of this problem is a partial blockage in the drain pump and or the drain line. Generally some draining occurs, but you are left with some water in the base of the dishwasher. Remove the lower panel from the dishwasher, this requires a #2 phillips screwdriver. There are generally 2 screws on each side. Once removed, you will see the drain hose going from a small pump near the floor up the side and out through the cabinet under the sink where that hose is attached to the drain or the garbage disposal [if you have one]. Have some rags handy as there will be about 2 cups of water or more.

Remove the drain hose from the drain pump by loosening the hose clamp. let that water flow out and watch to see if there is debris there. Next unscrew the pump and physically examine it inside as there is sometimes some glass or bone fragments there causing the problem.

Finally, disconnect the drain hose under the sink and check to be sure that that area is not partialy blocked. Reassemble. Joe

Bosch 23 in.... | Answered on Jul 17, 2011

Hi, I have an older dishwasher also and recently mywife also complained about it not cleaning right... so me being the man I amtried in vain to clean the things... Bought new spray arms online and installedthem in minutes...now the thing works like new... However I have also foundthat if the heating element goes bad then that also can mess things up bad...So I would buy new spray arms, and also check out the heating element to makesure it is working... Here is a tip that will help you with the onlinebuying...
Dishwasher SprayArms not Spinning

How to Buy ApplianceParts Online

A bad heating element causes many problems in dishwashers...

Dishwasher Problems The HeatingElement not Working

DishwasherMaintenance DishwasherResidue and Film on Dishes


Asker's Testimonial "explanation very clear. will give it a go and see howsimple it was. thanks Ronnie " - ronnieshomes

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Bosch 23 in.... | Answered on May 14, 2011


This means the unit is in flood mode, the link below has several articles written for this same issue.


Bosch 23 in.... | Answered on Mar 06, 2011


Welcome to FixYa.

Have you insured the unit is connected to a hot water supply line ? The water will not heat until it start's to circulate and activates the "flow switch" in the Bosch dishwashers.

If it is connected to a hot water supply, try running the hot water at your sink taps before turning on the dishwasher. If you still do not have hot water, check your hot water heater or supply.

If it is indeed connected to a cold water supply it will work, just be prepared for very long wash cycles since the Bosch machines will heat the water at a rate of 2F per minute...it could take a long time to reach 155F.

Let me know what you find out and I'll try to assist you in any manner I can going forward.


Macmarkus :)

Bosch 23 in.... | Answered on Jan 28, 2011

looks like the wash motor is failing. I am assuming the water inlet is ok and you have water sitting at the base.

You may have to checkout item 15 in this diagram.

Bosch 23 in.... | Answered on Jan 06, 2011

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