You are correct, I have one of the cheaper OBD II readers, actron OBD II PocketScan.

I removed the Lock-up control/shift control solenoid today, cleaned the screens which did have a lot of gunk on them in my opinion, maybe a little better, however problem still persists. I'm a machine technician by trade, and I plan to do a fluid change soon, however from my experience it never works. I don't have a lot of experience on this type of problem, however it seems more like an electrical problem than a mechanical, but when you combine fluid hydraulics with electronic controls it gets complicated for me!!

If anyone has any advise, pointers, information I would really appreciate it. I checked the coolant, and someone has changed it to green, no idea what, so I purchased some Honda coolant as well for a change, at $20 per gallon on a 50/50 mix that's a rip off for sure. I have a 97 accord EX auto, 4 cylinder V-tech with 246,000 on the clock, never had a transmission fluid change, as I was scared to after it not being changed so long. Zero problem with that car, still going strong, I have maintained the car well other than the transmission fluid.