One problem related to transmission sensor has been reported for the 1999 Honda Accord. The most recently reported issues are listed below.
Within the first year of owning my Accord v6, my transmission sensor blew out. That was the only thing covered under warranty. I repeatedly expressed concerns to the dealership that there was something with my transmission. It would thump and lurch the car forward or hesitate between gears. Repeatedly they assured me this was normal. Like everyone who buys a Honda, I thought Hondas are built to last so maybe this is normal. The fix-it was to flush my systems on numerous occassions. Which by the way, made things worse. I had to manually shift an automatic. Such irony. Now the vehicle only engages 2nd gear. I have been fighting Honda with this for 9 months now.