Hey guys, I've got a 04 Acura tsx with 221000 km on it, automatic transmission and no mods whatsoever. The problem with the transmission is that the D-light starts flashing I lose the manual option, and I can not reverse the car any longer. The VSA light and the check engine light come on when this is happening. I plugged it into the code reader and that said low input from solenoid B. I replaced solenoid B and 3 other solenoids (4 total) and the code went away for a few days then came back. Any idea what it is? I don't wanna spend 3k+ on a rebuild if it's a computer that i need to pick up, the fluid was recently changed (twice) with synthetic put in.

Any advice would be appreciated!