I have a 99 Accord, V6, Auto with about 130k. The other day, it started to shift weird and it takes a light more time and rpms before it engages from a stop. It's giving code 730 (tranny wrong gear) I just changed the fluid with OEM fluid last October when I replaced the engine. It kind of sucks to do all that work and now three months later to face this problem but Oh Well. My question is there any other thing that could be wrong like a solenoid or a computer issue that could be the culprit. The tranny worked fine until this week and it all happened rather abruptly as opposed to a gradual deteroration.

Any feedback would be appreciated

 

Any odd noises? Does it shift fine after you get off the line? Could be the torque converter if the car still moves but feels like it's slipping before engaging... Then again automatic accords from this era have pretty fragile transmissions.