Having transmission problems. When starting car AT check light flashes, and "service engine soon" is on. I had the same code appear 2 weeks ago, took it into the dealership and got a flush and the Revolution speed sensor replaced. But the light came back on. The transmission slips subtly, and not often, but it happens. it also won't shift into 5th gear. I just spent 800 bucks at the dealer getting it fixed, but the same code comes up. I'm trying to figure out what this problem could be. If I have to replace the transmission I will, but can somebody tell me if an 03-04 sedan transmission is interchangeable with an 03-04 coupe transmission

 

hey, im having the same problem with my car, ive been having it for a while. what did the problem wind up being? i know its an old thread but if you could answer it'd be awesome =D

 

did you fix it?