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.

The buttons aren’t labeled on the front of your machine as A B or C. But A is the button furthest to the left, B is the middle button, and C is the button on the right. Post a pic of the front of the machine with the controls or post the make and model.