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

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.

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

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

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.

fingloid Rotary Tools Expert Fixya

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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)