FIXED SHE6AP05UC/03 Intermittent E24 error code?

[jbaich]

Model Number

SHE6AP05UC/03

Brand

Bosch

Age

6-10 years

Hi all, I'm getting an intermittent (but more and more frequent) E24 error code when I start up the dishwasher. It seems that when it starts the pre-cycle routine, it runs the drain, which works fine, but when it goes to fill... no water and then E24. Wait 20 min or so, try again and works perfectly... I'm guessing based on the intermittent nature of the problem that it's a control board issue rather than the water inlet valve or something mechanical, but I thought I'd try to get some more knowledgeable opinions before I start ordering a bunch of parts and tearing things apart.

I've cleaned the drain screens and check the impeller for blockages, and when I fill the sump with water and try to run a cycle it pumps out the sump just fine before failing to send any water into the unit and issuing the error code. Is there some sort of diagnostic cycle I can get into to sort of test individual systems to narrow down the problem? I read of some units that you could hold down different button combinations to get into a bit of a diagnostic mode, but haven't been able to find anything for this model.

I'm guessing a bit at the age of the unit, but I think maybe around 6 yrs old?

Any advice would be much appreciated!

Thanks,
Joe

 

[Jake]

Hi Joe,

Jeff is our expert on Bosch dishwashers, he lives and has an appliance shop in Hamilton, Ontario Canada. You'll likely need to PM him to help you.

Here's a couple other threads that have that same error code: E24 error code

Jake

 

[jbaich]

Thanks Jake, I can't seem to figure out how to pm him... maybe I don't have permission?

Thanks,
Joe

 

[Jake]

Yes Joe,

To PM Jeff, click here jeff1 then you will see a menu on the left side that says: Send Private Message, then refer him to your thread here.

Jake

 

[jeff1]

Hi,

Some E24 code issues...
E24 error code

A copy:

Bosch Ascenta; error code E24 = Drain hose blockage or pump impeller failure, suppose running it with filter unsecured would allow some goodies to get in there.

A copy from someone else,s repair:

Have dealt with a fair number of Bosch dishwashers and have changed maybe one drain pump. Much more common problem is stuff clogging the feed to the drain pump, and/or stuff in the outgoing vent to the drain hose.

Unscrew the first filter, remove the metal plate, and then remove the mesh cylinder. Take a T15 and remove the small screw that holds the drain pump cover. Take a bunch of paper towels and a thin flat blade screwdriver and get all the popcorn seeds and other junk out of the way.

Now take a one foot long cable tie and run it up past the drain pump impeller into the tiny hole next to the impeller. This is the very small hole that faces the back of the unit. Keep moving the cable tie back and forth until you hear a "glug." You'll probably see a really disgusting lump of fat come out. Clean that up with a paper towel or a shop vac.

Put everything back together and prime with about a half-gallon of water. Hit "cancel-drain". You should hear the water gurgling as it flows out.

Another copy:

Just an fyi. while e24 is an error that does indicates water drain/pump issues or clogs -- if that all seems ok this is what i have found.... -- during the main power up -- if the main motor senses it is drawing more current than normal -- you'll get this error. further -- if you've been using one of those "all in one" cleaning tablets that have rinse agent built in -- and you put in rinse agent into it's container -- the excess sudsing due to excess rinse aid may be activating an anti flooding switch -- also causing this error. concerning the main pump motor -- overdraw of current could be due to calcium build up -- especially if you are not using the proper salt (which is not easy to find). a solution is a regular cleaning with a bit of clr. note this will cause suds too. so clean -- run, repeat, then run a couple times with no clr then remember also not to use a dishwasher soap that contains a rinse agent.

jeff.

 

[jbaich]

Thanks Jeff, I'll try the CLR... Do I put that in the rinse agent reservoir? My wife found the post of the fellow who had the same issue and his work around was to interrupt the start up cycle and then continue, which seems to be working so far for us as well, however I feel like this is a temporary band aid solution, and I'd like to fix the problem while I'm still in control of when to do so. If the CLR cleanse doesn't resolve, would you think control module, control board, water inlet valve or water level float to be the most likely place to start? As previously mentioned, it seems to drain fine, so I'm thinking it's not a clog or the pump.

Thanks,
Joe

 

[Appliantology]

FYI, I've also found that this new generation of Bosch Ascenta style dishwasher don't like drain hose extensions. To long of a drain hose will give this error as well.

 

[Peter Krogh]

The OP on this thread describes the exact problem I'm having:

• Bosch SHE6AP05UC/06 throws intermittent error code E24 on startup sequence.
• Unit clears water fine - bottom of drain well has only a thin bit of water at the time of failure (<1/8 inch)
• When failure happens, it seems to happen on the 4th part of startup cycle - it pumps, goes through another 2 cycles that I can't identify and then fails as it starts the 4th (after about 3 seconds)
• The same hack described above seems to work for me - interrupt the startup cycle and it works

I have tried:
• Turn breaker off and let unit reboot
• Add water and observe pumping into a bucket - works fine, solid stream
• Disconnect and reconnect all electrical connections

There has been a lot of pull, clean, replace the filter unit as these codes have become more common. Something worn in there?
Unit has had pretty heavy use for 11? years.

Looking for insight. I don't mind replacing parts, but some seem easy (logic board) and some look harder - motor, etc. Of course, I'd like to start with the most likely culprit.


Any help appreciated.

 

[jbaich]

I would also like to figure out what to replace! For us, it seems like interrupting the 3rd phase of the start up cycle at roughly the one minute mark (or as soon as the 3rd phase starts) and then turning it back on again runs the machine normally, been doing it this way since I posted this back in July! I've been meaning to get back on here and see if anyone can recommend an actual fix so thanks for reminding me!

FYI my wife called the bosch help hotline and they were surprised anyone would bother calling on a machine that old... ours is approaching 5 or 6 years... doesn't seem "that old" to me yet... Basically told her to go buy a new one...

Planned obsolescence is really starting to piss me off...

Cheers,
Joe

 

[Peter Krogh]

Joe,
Thanks for the specific mention of pausing on the third cycle of startup - seems to work here. In my case, there is no pause button, I'm simply opening the door. Is that what you're doing?

If I had to guess, I'd say the logic board is a likely cause. I have not visually inspected the logic board, but I did pull the white unit and reseat all connectors. Tempted to buy one and swap it in, but it would be good to hear from someone who knows about Bosch dishwashers first.

And yes, I've had similar experience with all the appliances we bought in our house remodel in 2006. Electrolux fridge needed a new logic board, clogged defrost ran, frozen water feed, easily broken drawers; electrolux double over had a cold solder joint on the logic board which I was able to fix; and *very surprisingly* electrolux range hood has the wrong wattage requirement *stamped in the metal and certified by UL* for the range lights. It kept blowing fuses, and was being repaired under warranty several times - new power supplies, lighting circuit, logic board, etc. Eventually I did the math on the bulbs and the fuses (W = A x V) and realized that 20 watt bulbs *should* blow the fuse by design.

Sheesh.

Peter

 

[jbaich]

Hey Peter, ours has a power on/off button, but i'd guess it does the same thing as opening and closing the door. My guess was the logic board too, but I was also hopeful someone with some experience could say with some degree of certainty if they agreed.

It's almost like they (various manufacturers) haven't been designing and building appliances for the last half a century and this is brand new technology or something... soon enough we'll all be zipping around in autonomous cars, but still can't figure out how to make an appliance last more than a few years...? I hope after Elon Musk's bored of tinkering with cars and batteries he moves into appliances

My friend's older bosch dishwasher recently started on fire... good thing he was home and was able to get to it before it spread...

Thanks,
Joe

 

[jbaich]

Hey Peter, I PM'd Jeff to ask him to take a look at this thread again and give us his thoughts... here's most of what was said, thought you might want to read it...

Hey Jeff, would you mind taking another look at this tread and letting us know if you think this is sounding like a logic board issue? clearly not a drain or pump clog at this point... Intermittent E24 error code?

Thanks,
Joe

Hi,

clearly not a drain or pump clog at this point

Why?

jeff.

clearly not a drain or pump clog at this point

Why?

I was just thinking because if it was a clog, interrupting the startup would not clear the clog and would either likely result in another error or some sort of flood? Since Peter and I seem to be having the exact same issue and both of seem to be able to get around it (with 100% consistency) by simply stopping and restarting the startup at a certain point in the process, doesn't that sound like an electronic issue? either software or hardware?

Thanks,
Joe

Sounds more like an air lock issue.
Drain too long, too high, too low, etc, etc.
Kinda sounds like an air bubble is gurgling out when the d/w is stopped.

jeff.

I'm not sure if this will be easy to read/follow, but basically I thought it was unlikely a clog and he came back with air lock...

Cheers,
Joe

 

[martin1b]

Peter,
What did you come up with? I have the same dishwasher with a similar issue. It throws an e24 after start up. The new drain pump runs and runs. When it starts the cycle, it errors. I replaced the drain pump, cleaned from the pump to the discharge outlet. Checked float sensor and seems ok. Really sounds like a power module but its pricey.

What solved your issue?

 

[Danielle Hill]

Has anyone figured out a permanent fix for this? Mine is doing the same thing but will work if I open the door during the beginning of the cycle. I’ve shortened the drain hose and checked for everything else recommended... I’m not sure where to go next!

 

[Appliantology]

We've found that some of these machines are particularly sensitive to drain length vs elevation issues. They will not handle drain extensions of any kind for the most part. If your drain runs under the floor to far the pump can't handle the lift to higher drain connections. Could also be a weak or overheating pump. Would only replace the control board as a last resort if you are positive all drain issues are normal.

 

[bigbuck]

Here is some information that may help.

 

[Shaniak]

I was having error code pop up after the initial draining. Checked most of these suggestions but nothing worked. Ended up gently lifting/spinning/depressing the float in case there was any buildup and that seemed to fix the problem. Not sure if this will work long term but thought I would pass it on.

 

[kravicha]

Bosch E24 intermittent

Hi folks,
I am new to this blog and trying to debug a problem with my Bosch SHX68E05UC dishwasher (~9yrs old) that has started giving these E24 errors. As others have experienced, I am able to follow a specific sequence of events to make it work. I turn it on, wait for the first drain to complete, followed by a second drain, then a whirring noise (~45sec from start) at which point I open the door, press the start button and close it. It then works fine for the full cycle (2hrs 9mins) including several fill and drain cycles.
So, i don't think there is a real drain issue and everything looks clean at the end of the 2hr cycle.
I am debating whether I should replace the control board (~$100) or the drain pump (~$35).
Any recommendation would be appreciated.
thx

 

[learjet]

Wow I'm having exact same problem I just posted this today as well! https://www.applianceblog.com/mainforums/threads/67672-Bosch-dishwasher-won-t-start-E24

 

[jeff1]

Hi folks,
I am new to this blog and trying to debug a problem with my Bosch shx68e05uc dishwasher (~9yrs old) that has started giving these E24 errors. As others have experienced, I am able to follow a specific sequence of events to make it work. I turn it on, wait for the first drain to complete, followed by a second drain, then a whirring noise (~45sec from start) at which point I open the door, press the start button and close it. It then works fine for the full cycle (2hrs 9mins) including several fill and drain cycles.
So, i don't think there is a real drain issue and everything looks clean at the end of the 2hr cycle.
I am debating whether I should replace the control board (~$100) or the drain pump (~$35).
Any recommendation would be appreciated.
thx

Hi,

shx68e05uc

Missing digits, I found SHX68E05UC/01

E24 intermittent

Intermittent issues are a pain in the ass...you wish it would break and stay broken.
Most we see are bad drain pump AND/or restricted drain hoses.

Dishwasher drain pump

jeff.