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FIXED SHX5AV55UC/01 Intermittent Bosch E24 Error finally solved 100%

johnkruz

Premium Member
Joined
Jan 31, 2022
Messages
4
Location
Chicago IL
Model Number
SHX5AV55UC/01
Brand
Bosch
Age
6-10 years
I had a Bosch Dishwasher SHX5AV55UC/01 that threw an intermittent E24 error code at the start of the cycle that gradually got more frequent over time. Finally, the E24 error code came up every single time I started the dishwasher. This “failure to drain” code could have been a lot of different things based on my extensive internet searches. There a many threads out there that claim to have “fixed” similar problems, but really went nowhere to a 100% solution in my circumstance.

My indications were that my dishwasher drained perfectly every time. Fast drain, water poured out when the drain pump ran and the sump was emptied out within about 10-15 seconds after starting.

I checked:

Screen filters were clean, drain hoses / water matrix were clean, nothing was plugging up or wrapped up around the drain pump impeller, turned off power overnight to “reset” the control board, float was fine -- would drain fast when held in the up position w/ the door open, vinegar cleaned it, small white pump cover was snapped in place (will not drain without it!).

I replaced:

The drain pump, small white pump cover, lower right side control board.

After all that, E24 code continued at the start of the cycle, not progressing to wash.

Further investigation revealed the following error sequence:

  • Press cycle start close the door
  • Drain pump runs to empty whatever little water remains out of the sump
  • Main pump runs briefly
  • Drain pump runs again, with nothing coming out because the sump is already dry
  • Main pump runs briefly
  • E24 error code is displayed
To get the wash cycle to complete and avoid the E24 error, wait 40 seconds after cycle start, briefly open/close the door and once you hear the water valve click open and the water starts to fill, the wash works perfectly all the way through to the end. It appears from other troubleshooters out there that you can do this “40 second door open/close” operation for years and the dishwasher will continue to wash and drain fine.

However, if you want your dishwasher to work perfectly again 100% like new, you will need to replace the main wash-motor/heat-pump. In my case it was a brand new wash-motor/heat-pump assembly and a pretty straightforward install. I didn’t buy used off of eBay because I was afraid of getting another defective pump. See explanation below for the non-intuitive reason for the “false indication” of a failure to drain the sump:

The dishwasher does a couple of stage checks to see if water exists by running both wash pump and then the drain pump to measure the current draw. If the current draw is high, it thinks there is excess water resisting the wash pump, and so tries to drain, and the wash pump again. If the current draw is still high it stops the wash cycle and throws the E24 error code. You can bypass this check if you open and close the door at the start of stage 3 – 40 seconds into the wash cycle.

From another website:

Bosch Dishwasher E24 Error – Draining Fault

Description:

Bosch dishwasher E24 error indicates that there is a problem with draining water from the dishwasher. This is a generic error that indicates that the dishwasher still has water in the sump. Sometimes this can be a tricky error to rectify, but follow the steps below and you should have the Bosch dishwasher E24 error solved fast and accurate.

Actions To Take:

If the dishwasher is full of water when the fault appears:

  • Clean filters and check drain pump for foreign objects.
  • Make sure the drain pump cover is installed properly.
  • Check drain hose and drain pipe under the sink for blockages.


If dishwasher sump is empty and the error code is displayed:

If Bosch dishwasher E24 error appears at the beginning of the cycle indicates that the heat pump impeller has become stiff and is giving a false reading that the dishwasher is filled with water. Most Bosch dishwashers detect presence of water in the tub by running the wash-motor/heat-pump and checks for resistance created by the water on the impeller. If the bearings in the wash pump start to seize up, this will give a false drain fault error and the Bosch dishwasher E24 error will constantly show up even if the water is draining well and no water in the dishwasher is present.

It seems like this E24 error while the water is draining fine is a common complaint w/ a lot of different Bosch dishwasher models. If you don’t mind the hassle of opening and closing the door at the 40 second point, it looks like you can get away w/ this for years. If you want a true fix replace the main wash-motor/heat-pump! Hope this helps you!
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
134,371
Location
Redmond, Oregon
Thanks for letting us know how you fixed your E24 error code.(y)

Here's the pump/motor assembly, that comes with the heater already installed, for your model:
00705174 Pump and Motor Assembly


Here's our other thread on this too:

Jake
 

johnkruz

Premium Member
Joined
Jan 31, 2022
Messages
4
Location
Chicago IL
Just to close the fix out and discover the cause of the wash pump failure, I disassembled it see why it was pulling high amps. Bottom line the front bearing (and rear) of the main wash pump motor was severely elongated, and the shaft was quite worn, see attached picture. The motor rotor was wobbling and hitting the stator, scoring lines into it, and the pump impeller was hitting and wearing into the housing causing drag and high amp draw, especially on the startup sequence.
I'm not sure how long the wash pump could have lasted if I hadn't changed it out. Others have reported it could run for years... I'm not so sure in my case...
 

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Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
134,371
Location
Redmond, Oregon
Good photo!

Thanks John for letting us know.(y)

Jake
 

KHanson3

Premium Member
Joined
Mar 30, 2022
Messages
10
Location
55447
Just wanted to checked up on you with E24 error. Have you had the E24 since you replaced pump motor? Ive got same issue for yrs now. I may invest $200 to fix issue...
 

johnkruz

Premium Member
Joined
Jan 31, 2022
Messages
4
Location
Chicago IL
Yes! The fix was 100% and the dishwasher runs all cycles perfectly like when it was brand new.

If you have taken all of the other prelim steps I detailed above, your wash pump rotor probably looks as BAD as in the pic from my last post. The wash pump was bad pulling high amps on the startup check and throwing that nasty old E24. Now ALL my E24 troubles are a thing of the past and I am back to loving my dishwasher again!
 

SJP2022

Member
Joined
Jun 21, 2022
Messages
1
Location
Georgia
I had a Bosch Dishwasher SHX5AV55UC/01 that threw an intermittent E24 error code at the start of the cycle that gradually got more frequent over time. Finally, the E24 error code came up every single time I started the dishwasher. This “failure to drain” code could have been a lot of different things based on my extensive internet searches. There a many threads out there that claim to have “fixed” similar problems, but really went nowhere to a 100% solution in my circumstance.

My indications were that my dishwasher drained perfectly every time. Fast drain, water poured out when the drain pump ran and the sump was emptied out within about 10-15 seconds after starting.

I checked:

Screen filters were clean, drain hoses / water matrix were clean, nothing was plugging up or wrapped up around the drain pump impeller, turned off power overnight to “reset” the control board, float was fine -- would drain fast when held in the up position w/ the door open, vinegar cleaned it, small white pump cover was snapped in place (will not drain without it!).

I replaced:

The drain pump, small white pump cover, lower right side control board.

After all that, E24 code continued at the start of the cycle, not progressing to wash.

Further investigation revealed the following error sequence:

  • Press cycle start close the door
  • Drain pump runs to empty whatever little water remains out of the sump
  • Main pump runs briefly
  • Drain pump runs again, with nothing coming out because the sump is already dry
  • Main pump runs briefly
  • E24 error code is displayed
To get the wash cycle to complete and avoid the E24 error, wait 40 seconds after cycle start, briefly open/close the door and once you hear the water valve click open and the water starts to fill, the wash works perfectly all the way through to the end. It appears from other troubleshooters out there that you can do this “40 second door open/close” operation for years and the dishwasher will continue to wash and drain fine.

However, if you want your dishwasher to work perfectly again 100% like new, you will need to replace the main wash-motor/heat-pump. In my case it was a brand new wash-motor/heat-pump assembly and a pretty straightforward install. I didn’t buy used off of eBay because I was afraid of getting another defective pump. See explanation below for the non-intuitive reason for the “false indication” of a failure to drain the sump:

The dishwasher does a couple of stage checks to see if water exists by running both wash pump and then the drain pump to measure the current draw. If the current draw is high, it thinks there is excess water resisting the wash pump, and so tries to drain, and the wash pump again. If the current draw is still high it stops the wash cycle and throws the E24 error code. You can bypass this check if you open and close the door at the start of stage 3 – 40 seconds into the wash cycle.

From another website:

Bosch Dishwasher E24 Error – Draining Fault

Description:

Bosch dishwasher E24 error indicates that there is a problem with draining water from the dishwasher. This is a generic error that indicates that the dishwasher still has water in the sump. Sometimes this can be a tricky error to rectify, but follow the steps below and you should have the Bosch dishwasher E24 error solved fast and accurate.

Actions To Take:

If the dishwasher is full of water when the fault appears:

  • Clean filters and check drain pump for foreign objects.
  • Make sure the drain pump cover is installed properly.
  • Check drain hose and drain pipe under the sink for blockages.


If dishwasher sump is empty and the error code is displayed:

If Bosch dishwasher E24 error appears at the beginning of the cycle indicates that the heat pump impeller has become stiff and is giving a false reading that the dishwasher is filled with water. Most Bosch dishwashers detect presence of water in the tub by running the wash-motor/heat-pump and checks for resistance created by the water on the impeller. If the bearings in the wash pump start to seize up, this will give a false drain fault error and the Bosch dishwasher E24 error will constantly show up even if the water is draining well and no water in the dishwasher is present.

It seems like this E24 error while the water is draining fine is a common complaint w/ a lot of different Bosch dishwasher models. If you don’t mind the hassle of opening and closing the door at the 40 second point, it looks like you can get away w/ this for years. If you want a true fix replace the main wash-motor/heat-pump! Hope this helps you!
Hi, I am facing the same E24/E25 issue for the past 3 weeks.
We called up a Bosch technician, he came in and checked if the water drains out of the drain hose and it went thru fine and said its not an issue with the dishwasher. (though he ran very quick runs)
He asked to check the plumbing lines as there might be some clogs in there, we checked it, there were no clogs. Then again called up the same Bosch technician, he walked in again and confirmed that it is NOT an issue with dishwasher as water drained out properly. E24 issue existed, but he refused to look into the issue beyond that. Though I had paid the service charges.
Today we called a different technician, he came in vacuum cleaned the drain hose and now he has suggested to change the drain pump. He said he will order it get back. Do you think only changing the drain pump would work ? This is the first time I am visiting appliance blog and your post looks similar to what I am facing.

Thanks
 

ASATHD

Premium Member
Joined
Jul 12, 2022
Messages
3
Location
CA
Hi, I am facing the same E24/E25 issue for the past 3 weeks.
We called up a Bosch technician, he came in and checked if the water drains out of the drain hose and it went thru fine and said its not an issue with the dishwasher. (though he ran very quick runs)
He asked to check the plumbing lines as there might be some clogs in there, we checked it, there were no clogs. Then again called up the same Bosch technician, he walked in again and confirmed that it is NOT an issue with dishwasher as water drained out properly. E24 issue existed, but he refused to look into the issue beyond that. Though I had paid the service charges.
Today we called a different technician, he came in vacuum cleaned the drain hose and now he has suggested to change the drain pump. He said he will order it get back. Do you think only changing the drain pump would work ? This is the first time I am visiting appliance blog and your post looks similar to what I am facing.

Thanks
Hey SJP,

I had a similar issue and ended up replacing both my drain pump and heat pump.

So far so good for me. If your fairly handy, you may be able to replace one or both yourself.

Let us know how it goes!

Here's where I posted my Bosch woes...

Cheers.
 

Hildebrau

Premium Member
Joined
Jan 26, 2021
Messages
2
Location
Austin, TX
Thanks for letting us know how you fixed your E24 error code.(y)

Here's the pump/motor assembly, that comes with the heater already installed, for your model:
00705174 Pump and Motor Assembly


Here's our other thread on this too:

Jake
Jake, which similar part is compatible with my Bosch SHX68E15UC? I'm looking to solve this same dreaded E24 once and for all. Thank you!
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
134,371
Location
Redmond, Oregon

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
134,371
Location
Redmond, Oregon
Yes, let us know how it goes.

Thanks!

Jake
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
134,371
Location
Redmond, Oregon
Glad to hear that.(y)

Thanks for the update and I also thank @johnkruz for the information he provided for this E24 FIX!

Jake
 
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