During some front end work on my 2012 Nissan Rogue SV (197,000 KM) in the summer, I had a mechanic point out that my automatic CVT transmission was leaking. He put in 3 containers of transmission fluid at that time. It began running a little rougher than before but I didn't know why. Now, I have an engine light on with P1778 and P0643 codes. My car manual is telling me that the car must be given genuine Nissan transmission fluid or damage may occur. Could the 3 containers of non-Nissan fluid have caused damage and can this be fixed if I change the fluid to the Nissan fluid?
A big thank you to all who care and may good fortune fall upon you!
my automatic CVT transmission was leaking.
out of where?
He put in 3 containers of transmission fluid at that time.
Wow. 3 quarts low? I'm surprised it ran
I have an engine light on with P1778 and P0643 codes
these DTCs indicate electrical problems with the transmission.
It's unlikely they have anything to do with the fluid top up. However, damage may have resulted from running the transmission dry. CVT's are delicate and not repairable.
Your top priority right now should be the leak.
https://www.nirogue.com/p0643_sensor_power_supply-469.html
https://www.autocodes.com/p1778_nissan.html
https://www.youtube.com/watch?v=WYCIrsMlHXo
What exactly was put in the transmission? Was it listed as meeting Nissan specifications for that CVT?
Just standard CVT transmission fluid was put in.
You would need to compare the specifications between that and the official Nissan fluid. (Nissan of course does not make their own fluids, they are made to Nissan's specifications by a 3rd party.) To be on the safe side you could always change out all the fluid in the transmission with the Nissan branded stuff.
However Nissan/Jatco CVTs are notoriously weak. Yours has already lasted longer than expected and may have already been on its last legs.