I have removed to drain pump, solenoid, water heater.
The drain pump white part spins with no obstruction at all.
With a multimeter:
My solenoid is about to get 984 OHMs resistance.
I’m not sure how to check my drain pump. I don’t see any connector end. Closest thing are these 6 metal spike thing pointed out on the motherboard.
I don’t see any visible blockage.
I’m not sure if I need to check the voltage as well. And do I need the dishwasher running for that. Problem is still stuff is located at the bottom of the dishwasher.
Bosch SilencePlus 50 DBA shx3ar75uc/28
This might be the LED to service modes that can apply to yours.
https://drive.google.com/file/d/1zIHsR3agFZKQA8X5voMHcFVDxAmvW53C/view?usp=drive_link
I THINK this is for your model
Those two flashing complains about the drain pump. Another comment I saw showed the drain pump cover not being pressed down all the way until it clicks in can cause it.
https://www.bosch-home.com/us/owner-support/error-codes/dishwashers#%2FTogglebox=16535672-16716986-54%2FTogglebox%3D16535672-16716986-51%2F
I can’t find the actual repair manual for that model though to decode the menu options for the service mode. Another similar display less model probably has the same meanings for the flashing LED lights. Their UI is atrocious.