Hi everyone! I'm wondering if anyone can give me some help with my car. I have recently developed a problem with my transmission.. so when I turn on to a highway and I'm driving to get to the speed limit of 110 my car won't change gears passed 80km it just revs out like its stuck in 1st or 2nd gear I then have to use sequential mode to change my gear manually and then it's right.. this happens everyday but when I'm on a road that has a lot of corners and the speed limit is 100km the car shifts perfectly without any of the problems.. the trans fluid is fine I've had it checked, I've replaced my battery and throttle position sensor.. I've got got codes of u2196 & u2197. Please help!! ?