Question about Bosch 24 in. SHX99A15UC Stainless Steel Dishwasher

Open Question

Drain cycle won't turn off

Upon start-up, the initial drain cycle prior to filling won't end. Water pumps out until dry and then the pump seems to keep running. I have filled with water multiple times via sink and turned off and on to watch it successfully drain the water but not kick into its fill cycle.

I have added some vinegar thinking hard water might have fouled some sensor or float switch and flushed it with both hot and cold water all to no effect. This happened once before but it seemed to clear itself overnight.

Posted by on

6 Suggested Answers

  • 54 Answers

SOURCE: bosch shu43

sounds like your impeller/motor is going bad or something is stuck in that area.

Posted on Jun 25, 2008

SOURCE: Bosch sgv53e13gb Integrated dishwasher - wont start a new cycle!?

Thanks for the input Dicky...I think my dad will be onto the place of purchase first thing tomorrow!!

Posted on Jul 13, 2008

  • 725 Answers

SOURCE: Bosch SHX46A02UC-21

float switch is in the flood position and the drain pump is running.. there is water under the dishwasher or that switch is stuck up..

Posted on Aug 21, 2008

  • 1 Answer

SOURCE: bosch dishwasher SHX46 won't fill with water

My model is actually a SHX46 but I was able to piece together some advice off of this site. This is what I did. I removed the toe plate and then I soaked up all the water that I could out of the white pan at the bottom. Then I unhooked the water supply line so that I could pull the dishwasher out. Once I got it out, I tipped it forward to drain out the rest of the water. I then unhooked the drain line that was connected to the disposal and cleaned it out with a "Snake line" I then hooked everything back up and it worked. Thanks so much for this website, I know it saved me a ton of $$$$$$$$$.

Posted on Jan 29, 2009

  • 423 Answers

SOURCE: Contunuous draining turned into a flood when unit powered off

The fill valve is governed by the float switch. I doubt that your fill valve (solenoid) has failed.

Focus on replacing the float switch and you should be all set.

Good Luck!

Posted on May 09, 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"

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


1 Points

Related Questions:

1 Answer

For Miele Dishwasher G2470SCVI Need help with remaining water in the bottom. Model# G2470 SCV1 SF Type-HG03. Runs through the entire cycle,long,short ect..everything is clean and dishes look great but

see this causes and fix it. God bless you
Belt, Water Pump Although few dishwashers have a water pump belt, if the dishwasher won't drain there might be a worn or broken water pump belt. After removing the lower kick panel the motor can be seen in the front, the water pump belt is on the bottom of the motor.

Drain Pump If the dishwasher won't drain, the drain pump might be defective. Test the pump motor with an Ohm meter. Drain pumps are not repairable, if it's defective it will need to be replaced.

Drain Impeller The drain impeller is attached to the pump and pushes the water out of the dishwasher, through the drain tube and into the garbage disposer or drain line. If the dishwasher won't drain, the drain impeller might be broken or worn out. Replace both the impeller and seal at the same time.

Drain Solenoid Kit If the dishwasher won't drain, the drain solenoid kit might need to be replaced. The drain solenoid is an actuator that opens a flap to allow the water to drain.
Drain Valve The drain valve can get clogged with debris and should be cleaned out if the dishwasher won't drain. If it seems clear of debris but won't actuate, it will need to be replaced. The drain valve is not repairable.
Pump and Motor Assembly If the dishwasher won't drain, the pump and motor assembly might be defective. If the motor runs during the drain cycle, check for a blockage in the drain line. If the motor won't run during the drain cycle or if it just hums when it should be running, the pump and motor assembly might need to be replaced.

Clogged or Improperly Installed Garbage Disposer If the dishwasher won't drain and the garbage disposer was installed recently, the installer might have forgotten to knock out the drain plug from this disposer. All garbage disposers are sold with a solid plug in the drain tube for situations where a dishwasher isn't connected. However, if the dishwasher is connected, the plug will need to be removed. If the disposer wasn't replaced recently, remove the dishwasher drain hose from the disposer and clean out both the fitting on the disposer and the end of the drain hose. These are the most common places to find an obstruction if the dishwasher won't drain.

Drain Hose If the dishwasher won't drain the drain hose might be clogged. Remove the drain hose from both the dishwasher and the sink drain to clean it out. The most common place for an obstruction is at the garbage disposer.

Check Valve If the dishwasher won't drain the check valve might be stuck closed. The check valve is a small plastic device which prevents water from returning to the dishwasher after it has drained. If the valve gets stuck closed, it will prevent the water from draining. The check valve is the device that the drain hose is attached to on the dishwasher
Check Ball If the dishwasher won't drain the check ball might be stuck. The check ball is a small plastic ball in the check valve which prevents water from returning to the dishwasher after it has drained. If the ball gets stuck, it will prevent the water from draining also. The check valve is the device that the drain hose is attached to on the dishwasher.


Sep 28, 2012 | Dishwashers

1 Answer

The washing cycles both (pre-wash and main wash) can't work through to the end. when the water has been filled, the four indicating lights flash together and sounding like tide with rhythm. when...

It is possible that the machine does not start off the cycle because there are errors due to feedback from the inputs. For the program to start up the main program controller must initiate the INLET/MOTOR/DRAIN pump/ valve to open up and allow each function to be driven starting from the flow of water into the drum as also the drain valve to open to exit the water at the point of the program cycle. If this does not happen then the voltage at the valve/motor/pump must be checked or the fault relates to no voltage from the controller. This means the controller is a suspect since the cycle when advanced seems to go through well.

Make sure that a fault in any of the cycle will relate to the specified action, so check the command from the program module and then the executing device be it the valve or motor or pump.

Please check the link below:

Thank you for using fixya.

Aug 27, 2011 | Dishwashers

2 Answers

My Kenmore dishwasher does not drain out, What could be the problem?

No drainage, or poor drainage issues are usually caused by either a failed drain pump, or the sump area under the sprayer is clogged with debris. The sump is the area at the bottom of the tub where water collects on the initial fill. A wash pump cycles the water throughout the wash cycle, followed by the same water being drained from the unit by means of a drain pump. This area is usually covered by a coarse screen and fine screen to prevent debris from accumulating. But, over time, some debris may still get past the screens and collect in the sump. This usually results in poor cleaning results due to restricted water flow through the spray arms, and poor draining.

I would recommend you remove the lower spray arm and screens and check the sump area for obstructions. If the unit still has standing water inside, use a wet/dry shop vac to drain. Remove the drain line from your sink and pull a vacuum on the end of the dishwasher drain hose. If the water drains freely from the unit, then you probably have a bad drain pump. If the water will not drain, you have a clog somewhere. Check your drain lines and pump for obstructions.

If you have any questions, please post back with a MODEL NUMBER. I hope this helps you.

Aug 15, 2011 | Kenmore Dishwashers

1 Answer

Brand new SGS57A02GB just fitted. Run initial cleaning wash to get rid of factory water. Drain starts then stops, starts filling, goes through 2 filling cycles then the drain pump starts. The drain pump...


This problem is mostly caused by the drain pump or a restricted drain line. Try taking the end of the drain hose off under the sink and re-checking the drain-out condition. If the unit is still not draining, I recommend replacing the drain pump.

Other possibilities could be that the sump is blocked, or the control or harness may need to be replaced.

Hope this helps.


Feb 01, 2011 | Bosch 24 in. SGS57E02 / SGS57E08 Exxcel...

1 Answer

Kenmore 17379 dishes are not clean after running a cycle


If you are noticing that the dishes are not clean, then there are a few things to check for. Check the soap powder if it's kept in a dry environment. Also try replacing the powder with something like a gel or liquid. Next thing to check for is the water pressure and fill valve. Check if the water is filling in and the spray arms are throwing the water with enough pressure. Try and listen to the sound if you hear a proper spraying action sound. If it seems as a low water pressure then check the fill valve.

Now, check if dishwasher is draining the water or not. While the dishwasher is working check whether the dishwasher is draining and there is not much left out water after the cycle is complete.
Dishwasher not draining issue usually occurs due to kinked drain pipe, clogged drain filter or drain pump. Check the drain hose for any visible clogging, remove if present. If no visible lint is present then remove then turn off the dishwasher and remove the drain hose and check for any visible clogging. If still not visible then the drain filter or drain pump is clogged and you'll need to clean the drain filter and drain pump.

Jan 31, 2011 | Kenmore 24 in. 17372 / 17374 / 17379...

1 Answer

Water won't drain

Do the diagnostic test:

To start test program, press and hold both SCRUB WASH and DELICATE/ECONO program buttons, then turn unit on by pressing ON/OFF button. Initially, control module version # will be displayed (e.g./ ?21? = version 1 with jumper). When wash program buttons are released, lights above them will flash. To end test program, press ON/OFF button.
To check each program indicator light, press its button. To check Cycle Countdown display, Refill Rinse Agent light and REGULAR WASH light, press REGULAR WASH button (press Delay Start button to test Cycle Countdown display alone). Cycle Countdown display will show “88′ when REGULAR WASH button is pressed and “8h” when Delay Start button is pressed.
To start testing, press both the SCRUB WASH and DELICATE/ECONO buttons a second time. When testing has ended, Cycle Countdown display will show a fault using codes below. If more than one fault occurs, code numbers will be added together, (e.g./ ?6? = faults 2 + 4).
0 = No faults detected 2 = Heating fault 8 = NTC (temperature sensor) fault
1 = Aqua Sensor (“Sensotronic”) fault 4 = Filling fault F = Filling fault (display occurs during wash, not test)
To check for heater, high limit or flow switch problems, start testing until heating starts. Using a meter with a current coil, measure current going into dishwasher. If current is ~ 11 A, then heater, high limit and flow switch are OK. If current stays at ~ 1.5-2 A, then heater, high limit or flow switch are faulty.
If water level switch (f1) has failed (opened), display will show fault code “4′ and unit will continually fill and drain where testing won’t be completed. If flow switch (e5) has failed (opened), display will show “0′, water won’t heat (to 150?F) and water won?t stop circulating. If NTC probe (f2/f4) has failed (opened), display will show fault code “8′ immediately and testing will end shortly after water has started circulating.
The dishwasher not draining is most probably faulty drain pump or drain hose is got bit loose.It has to be checked and confirmed
.You can get required parts from
Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

Aug 27, 2010 | Bosch 24 in. SHU53 Built-in Dishwasher

1 Answer

FDW60 has standing water in the bottom and will not fill up

You most likely have a stubborn clog in your kitchen drain. Try filling the sinks with warm soapy water and then letting the water drain while also turning on your garbage disposal. Sometimes the extra water pressure will help push the clog through.

Jun 16, 2009 | Hotpoint 24 in. FDW60 Free-standing...

1 Answer

ASKO 1475 Does not not pump out and drain at end of cycle.

If dishwasher drains ok into bucket then fault is with the house plumbing

Jan 19, 2008 | Asko 24 in. D3250 Built-in Dishwasher

3 Answers

Bosch Dishwasher wont drain

have you removed the filter? if it gets clogged the dishwasher wont drain. other wise is sounds like a faulty drain pump

Nov 17, 2007 | Bosch 24 in. SHY56A05 Stainless Steel...

Not finding what you are looking for?
Bosch 24 in. SHX99A15UC Stainless Steel Dishwasher Logo

Related Topics:

408 people viewed this question

Ask a Question

Usually answered in minutes!

Top Bosch Dishwashers Experts

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Gerry Harvey
Gerry Harvey

Level 3 Expert

1456 Answers

prem mathew

Level 3 Expert

662 Answers

Are you a Bosch Dishwasher Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides