I have a 2011 Altima 2.5SL sedan with a 1XT3C transmission in it. Two speed sensor codes popped so I had them replaced and it seems they did not fix the problem because according to the garage who consulted with Nissan, there should be a transmission 1XT3D in it not the "C" model. As I am googling though, it seems that both of these will fit for my car. Can anyone please shed some light on this? I am puzzled because if the transmission bolted up and runs without issues (minus the sensors), how is this possibly the "wrong" transmission?