Nissan tech uses Consult-II to read the CVT Fluid Deterioration counter. If it is higher than 210,000, change the CVT fluid.
There is an Android App to use with ELM327 to get CVT info similar to the Nissan Consult-II scanner.
CVTz50 - CVT diagnostics with ELM327
This is the thread which I started about this app. I have the correct ELM327 module. But I have not purchased the app yet.