How do I remove the circulation pump? - Bosch SHU9925UC Built-in Dishwasher

Hello
You try this it may help.
How do I fix error code E21 dishwasher?") Circulation Pump Blocked

1. Remove any excess water before removing the base of the machine to release the pump.
2. Check and remove any blockages preventing the circulation pump from turning and Replace if any damage is found.

Sounds like the circulation pump is either bad or has debris in it. You have to flip the washer on its side and remove the circulation pump. Then you will be able to get in there and clean it out

You should be able to remove radiator cap and see the fluid circulating in the radiator, if there is no circulation then the pump is possibly bad.

Hi,

Does the circulating pump- pump water? Remove the hose that goes to the spreader bar and run the unit again, if it moves water as a new pump should check for blockages in that hose and spreader tube. Get back to me if this doesn't work please. Personal email address [email protected]...

I’m happy to help further over the phone at https://www.6ya.com/expert/gere_bf68e6055dd61249

Capacitor should have a uF and voltage rating stamped on it. They are NOT a one-size-fits-all.
Always keep your Owners Manuals so you can use it to get parts. Without seeing it myself, the part will probably have to be replaced.
Sometimes you can find the manufacturer online and get parts through their website.
Possibly find this capacitor at an AC shop.

You have a Taco Cartridge Circulator pump. You cannot replace the impeller. You can buy a new cartridge on line and install it your self. Be sure the system is not pressurized. When you remove the motor and then the cartridge expect water to run out as it opens the water lines. If it was installed like I like to do there are two valves one at each end of the pump, close those then replace the cartridge, you will not spill much water that way.

make sure the pump has been primed, all the valves are open and in the correct position, no obstruction in the skimmer.
if the pump is working but water still not circulating, the impeller may be clogged with debris. you will need to split the pump and use a shop vac to remove the crud in impeller fins.

Check your drain. It is dual purpose. It not only drains but, it also recirculates the water doring the cycles.