I have transmission fluid spraying out of the center hole circled in the attached picture.
I thought I damaged the coolant hose when moving it to fit my socket when removing the solenoid. I replaced the hose, but now it appears the fluid is blowing out of this center hole rather than the hose.
I can't find where there is a bolt, washer, or gasket that should go here. I can't even find what this would be called.

 

What year model engine (v6 vs 4cyl) and transmission (auto vs manual) are you dealing with?

 

2002, V6 3.0 automatic

 

I'm not very familiar with the V6 transmission layout. I just googled 2002 accord v6 transmission.

jdmenginezone had a used one with a lot of pictures. Maybe you can find what should be in the hole that is leaking transmission fluid.

 

The hose on the transmission is for the breather/vent. It probably has to do with the vent.

 

I replaced the hose, because I initially thought that's where the leak was. Number 6 in the above diagram. But the transmission fluid is coming out of the plate next to the hose...the middle hole. Are you saying that's a vent?

 

Can you post a picture of that area in your transmission?