My cousin is having the exact same problem on his 2003 v35 sedan with 8speed CVT.
He can't get the car to change gear, and the engine seems to not like revving over 4,500rpm. I believe that the car is in limp mode.
The oil hasnt been changed to the nissan cvt one. Would we go into the dealers and ask for another models car gear oil (e.g another nissan with CVT) and just buy the oil from that...?
Any help would be appreciated. It has been off the road for a while now.... Your help is greatly appciated