from the little I know about hondas I think the sensor is the one closer to the torque converter?
the problem with the transmission is that it stay in one gear and high rpm or it shift after it has been on the same gear and high rpm for a while.
a crazy friend of mine "girl" was driving my car all day yesterday and I think she was shifting from d1 to d4 all the time and today I got the car and surprise surprise.