Question about Bosch Dishwashers

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My Bosch dishwasher is not draining properly and shows an error sign of EO4...I have made sure the impeller is clear.

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  • David Brown
    David Brown Oct 09, 2019

    In many cases the dishwasher will stop draining or draining fully due to a clogged drainage hose or due to an object caught in the draining pump. There are some cases when the draining pump is faulty and needs to be replaced. We have assembled the top issues to check for a dishwasher that does not drain.

    Drain Pump: The drain pump pushes water through the drain hose. If the drain pump motor is malfunctioning the dishwasher will not drain. Drain pumps can be checked with a multimeter. If there is no continuity then it must be replaced with a new part.

    I found this at:
    https://www.electrafixbc.ca/appliances/d...

    Check it out for more info on your dishwasher issue.

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  • Bosch Master
  • 713 Answers

Check your drain hose, especially where it goes into your garbage disposal. Also, if you got a new garbage disposal, make sure the plug has been knocked out in the dishwasher drain port.

Posted on Oct 03, 2019

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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Anonymous

SOURCE: Will not drain and shows E6 error code

I had this problem and eventually found a small piece of mussel shell in the bottom part of the machine, it seems they are very sensitive to the tiniest fragment of debris.

Posted on Jul 14, 2007

Anonymous

  • 105 Answers

SOURCE: bosch classixx dishwasher not draining

try removing pump some models can be serviced fron inside well of machine glass can stop the pump from turning
clean out water and remove filters find a screw in base of well remove and remove pump housing check with torch to see if any obstuctions there if not see if the impellor moves around when turned and make shure that the pump is not worn out

Posted on Feb 24, 2008

VOTIT

LORETO LACARON

  • 2071 Answers

SOURCE: Asko D3350 code F7

Just click below;

WHAT IS WRONG WITH YOUR DISHWASHER?

For a detailed Dishwasher illustration, click below.

Built in
Warning! To avoid personal injury or even death, always disconnect your appliance from its power source--that is, unplug it or break the connection at the circuit breaker or fuse box--before you do any troubleshooting or repair work on your appliance. Also, because some components may have sharp edges, use caution while working on your appliance.

There's an error code on the digital display

It doesn't work at all
It cleans poorly
There's no water entering the machine
The water doesn't drain from the machine
It's noisy
It leaks
The dry cycle has problems
The door has problems
The cycle doesn't complete
I see an error code
The detergent cup doesn't open
The cycle times are too long


Hope this may help;

Regards,
VOTIT

Posted on Sep 14, 2008

Anonymous

  • 1 Answer

SOURCE: Bosch SHU9925UC Dishwasher Stuck in Initial Drain Cycle

OK Bosch Dw fans.........here is the fix if your SHX dishwasher is stuck on the drain cycle. This may save you a couple hundred bucks.......so 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. ........so 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

Macmarkus

Mark MacDonald

  • 2605 Answers

SOURCE: error code eo4 and washer does not spin or drain

Hello,

Welcome to fixya.

The "E04" error code on your Bosch washer refers to a drainage problem as you may or may not already know. ( it can mean door lock error, but that is usually a by-product of it not draining )

What you may have is either a partially clogged pump, or a faulty pump...the later being the least likely.

You haven`t mentioned if you`ve actually visually checked the pump...it is likely just that, a blocked pump.

Anyway, here`s the most likely way to remedy a E04 code.

**Unplug the washer from the wall or turn off the breaker before attempting any repairs**

  1. Get some towels and if possible a wet/dry vac. If the machine drained, it won't be too bad. If your machine is stuck full of water, hopefully you won't get wet. ( maybe you`re lucky enough to be close to a floor drain )
  2. Locate the round door on the front of the machine (about 6" in diameter, lower right corner)
87f1b39.jpg
3. Find a drill bit or small screwdriver that fits in the hole in the round door.

4. Insert the bit into the hole in the door. It will push in a tab, it doesn't take much force. Rotate the hole (clockwise) to 6'oclock and it should come free. (the edges are very sharp so be careful or wear chain-mail gloves).

5. Once the door is out of the way you'll be greeted by a 3-4" plastic cap with wings so you can unscrew it by hand. ( you should also see a green ring with a string attached, if you pull this the door should unlatch, but getting the water out first is usually a good plan. This will deal with the door lock issue but it likely isn`t unlocking due to the water in the tub )

6fb4d4a.jpg
**There is a small collector lip at the bottom of the cap, that is where you can hold the wet/dry vac to catch the water. Unscrew slowly so you don't get flooded, until it is unscrewed all the way out.**

6. Now pull out the trap and visually inspect the inside of the pump as well as the filter/trap. Hopefully you'll find the item/debris that initiated the error code.


7. After removing any debris or obstruction`s re-install the button trap/lint filter and plug the washer in to power or reset the breaker and give it a test.


8. Run a load and watch for leaks. Leave the pump access door off until you are sure you screwed the cap in tight and there are no leaks.

Ultimately you may have a faulty drain pump, or a lock, but I would certainly start by performing the things I listed first.

Let me know if you require further assistance and if not and this indeed solves your problem, please rate the solution I provided accordingly.

Thank you for coming to "fixya" and good luck.

Regards,

Macmarkus :)

Posted on Dec 29, 2010

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1 Answer

Bosch SHU43C07 impeller does not freely spin?


You will need to replace the Drain Pump Motor Assembly Bosch Part Number:AP2802385.
bosch-drain-pump-motor-167082-ap2802385_01_m.jpg

Most Bosch dishwashers are relatively straightforward to work on.
However, it you are not familiar with their disassembly and reassembly, you should take clear pictures of every part or wiring connection before you take it off or disconnect it. This will be invaluable when reassembling the dishwasher.

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If your model has a separate drain pump? You may have something caught in the pumps impellers.

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error code E24 = Drain hose blockage or pump impeller failure, suppose running it with filter unsecured would allow some goodies to get in there.
Changing the fine mesh filter should fix this.

Jun 29, 2012 | Bosch Dishwashers

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Hi I have an Bosch SGs43c02gb/35 and it does not drain all of the water out when it has finished the cycle, I have cleaned the filters out which were relatively clean and run it with a dish washer cleaner...


Hello

It is quite common for a dishwasher to not drain because either the drain hose or the air gap (if the unit has one) is clogged up. Drain hose clogs commonly occur where the hose is attached to the main household drain line, or where the hose connects with the garbage disposer. Try removing the drain hose to unclog any debris. Don't forget to reattach the hose before you start your dishwasher again.

The pump assembly is comprised of a pump, wash impeller, and drain impeller. The pump ejects the water from the unit, the wash impeller pushes water through the spray arm, and the drain impeller directs the water towards the drain port. Examine your dishwasher's pump assembly. Clean out any debris that may be blocking it. Replace the pump assembly if any of its parts appear to be worn or defective.

It isn't very common, but sometimes a dishwasher's pump assembly is driven by a belt. If that belt becomes worn and defective, then it cannot properly run the pump that drains your dishwasher's tub. If your dishwasher uses a drive belt, examine it now. If it shows signs of wear, replace it.

A defective timer could interfere with a dishwasher's ability to drain properly. Test your dishwasher's timer mechanism. If it is faulty, replace it. Keep in mind that you can replace either the entire timer assembly or just the timer's motor.

The motor plays a key role in a dishwasher's ability to drain water. If your dishwasher's motor is not functioning properly, it will negatively affect the draining capability of your machine. Test your dishwasher's motor for continuity. If it fails the test, replace the motor.

In some models, a valve has to open in order for the water to drain out of the dishwasher. This valve is controlled by a solenoid, but it is the timer that decides when the valve should open. If your timer is working fine, check the drain valve and its solenoid. If need be, replace them.

Aug 20, 2011 | Bosch 24 in. SGS43C12 Classixx...

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Dishwasher does not start. Confirmed power is making to dishwasher. It is as if there is no power to control panel - no led's or lights. Do not know how to follow power for further troubleshooting? Any...


Same symptomz, but slightly over a gallon of water remaining in bottom of washer. Found following with google:

sounds like something is jammed in drain pump. pull out screens and on left side of sump (looking down into bottom, 9:00 position) has a torx screw holding cover over drain pump, remove screw, cover has tab towards backside to lift towards you. glass is clear in water. .if no debris , spin impeller blades to see if jammed/frozen. if so, replace drain pump from front left side.

There was stuff there but impeller OK. Noticed electrical diagram near mains connection -- would be useful had I not noticed that one of the twist-on plastic insulators showed signs of overheating. Shut off power, removed an inch of insulation, retwisted new twist-ons, and repowered. Everything now works perfectly.

Sep 29, 2010 | Bosch SHU9915UC Dishwasher

1 Answer

Not all the water is draining


first remove drain line garbage dissposal and make sure inlet hole is clear of debre.next put drain line in a bucket and see if unit drain's properly.also check filter in dishwasher.if unit still doe's not drain than you may have a bad impeler in the water pump.to replace the water pump is a major job and cost of service call,part's and labor in most case's would exceed worth of unit.

Nov 17, 2009 | Bosch 24 in. SHU43 Built-in Dishwasher

1 Answer

I own a Bosch SHU3036UC not draining properly


HI. check the following areas for faults.

1. Air gap / Drain hoses
If there is an air gap (located in the sink, near the faucet), check to see if it is clogged. Unscrew the top cap and see if there is anything blocking inside. Note: If there is no air gap installed, the dishwasher might not drain properly.

If the drain hose is clogged, the dishwasher would not drain. If there is an air gap installed, it is very common that a hose going from the air gap into the garbage disposer is clogged. Remove and clean the hose. Make sure to reattach the hose before starting the dishwasher.

Note: If you recently had a garbage disposer installed, it is common to overlook removing the drain plug.

2. Broken belt
Some dishwasher models use a belt to drive the pump. Replace the belt if found broken.

Note: Sometimes the belt would just come off the pump. Even though it might not be broken, it is recommended that you replace the belt, because it is probably too stretched out.

3. Pump
Some models have two impellers inside the pump - one, wash impeller, takes care of the wash cycles, the other, drain impeller, drains the water out. If the drain impeller is broken (broken blades, shaft), the dishwasher would not drain. Replace any broken pump components.

4. Drain solenoid
Some models (for example most GE dishwashers) use a drain solenoid to drain water out. Sometimes the solenoid gets stuck, preventing the water from draining out. Try to free up the solenoid. If unsuccessful, you might have to replace the pump assembly.

5. Motor
If the motor is stuck, it is sometimes possible to free it up by manually spinning the motor.

Replace the motor if defective.

6. Timer
Replace if defective (note: uncommon problem).

Aug 04, 2009 | Bosch 23 in. SHU303 Built-in Dishwasher

1 Answer

Wont drain


hello. i can help. unfortunately there are several possible causes for not draining. I will list and explain each one to help you isolate the problem.

If the water doesn't drain from your dishwasher, check these:

Drain line/air gap
Pump
Drain valve and/or solenoid
Belt
Motor
Timer
Drain line/air gap A clog in the drain line or air gap (if there is one) is the usual reason that a dishwasher won't drain. Often the problem is at the point where the drain line attaches to the garbage disposer or household drain line. If you remove this line, you can clear any debris from the hose or hose connection. Be sure to reattach the hose before starting the dishwasher again.

Pump Your dishwasher pump ejects the water. The pump is usually mounted directly to the motor, then attached to the bottom of the dishwasher. You can reach the pump from inside the dishwasher, but first you need to remove the lower rack, the spray arm, and the spray arm support.

Look for an impeller--a round plastic fan blade-type of device that spins around. This is the wash impeller, which forces the water through the spray arm. Beneath the wash impeller is the drain impeller, which is similar in size and shape to the wash impeller. The drain impeller pushes the water toward the drain port. These components make up the pump. If any of the pump components are defective, you need to replace them.

Drain valve and/or solenoid Many dishwashers use a drain valve with an electric solenoid. When electricity flows to the solenoid, the valve opens and diverts the water to the drain. Sometimes the solenoid, or the diverting lever, sticks and prevents the dishwasher from draining or filling properly. Try to free up the solenoid to lubricate the lever. Otherwise, you may have to replace the solenoid or pump assembly. With these systems, the motor always rotates in one direction. When it's energized, the drain valve diverts the water.

Other dishwashers simply reverse the direction of the motor to drain the dishwasher. These units don't have a drain valve. Instead, there's a drain hose connected directly to the pump housing.

Belt One brand of dishwasher uses a belt to drive the pump. If this belt is broken or has fallen off, replace it.

Motor If the motor isn't turning or working, the unit won't drain. First check to be sure you have power to the dishwasher. If not, see the section "It doesn't work at all." If the motor hums but doesn't turn, it may need to be replaced.

Some dishwashers are susceptible to getting stuck if you don't run them regularly. If you haven't run the dishwasher for more than a week, you may need to manually spin the motor to free it up. If the motor is defective, you need to replace it. Dishwasher motors can't be serviced.

Timer Part of what the timer does is control the motor and drain valve. If the timer doesn't work properly, the water may not drain and you need to replace the timer. This problem is uncommon.

Jun 20, 2009 | Bosch 23 in. SHU 8805 Built-in Dishwasher

1 Answer

Bosch SHU33A06/22 does not drain


I think so. Check for power at the pump. If so is it running. There are seperate pumps for drain and wash. It is also possible the impeller came loose and the motor is running but not turning the impeller.

Jul 02, 2008 | Bosch 24 in. SHY56A05 Stainless Steel...

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