2000 Acura Integra getting a P0730 code reading.. This is the only code display

What is your question?

I recently purchased a 2000 Acura Integra and have been having problems. I took it for a test drive and everything was fine so I decided to go ahead and purchase the car. About a half hour later I was driving down the road and it wasn’t picking up speed I was looking at the RPMs and they were going up but the car was going nowhere.It was really upsetting because he had been driving just fine and all of a sudden it started to do this. It seemed like it got worse and it started To not even want to move from the driveway. I got in the car the next day to show a family member with the car I had been doing and again it started to drive normal like if this situation had never occurred to begin with please help me I don’t understand what could be wrong I don’t know very much about cars but I do know a little bit I have already checked the fluids and they are normal the flu it doesn’t look or seem dirty what do I do