Possible Cause

WARNING: This page is about a different car, the 2007 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

Harness or connectors (These switches circuit is open or shorted.)
(TCM, and unified meter and A/C amp circuit are open or shorted.)

(CAN communication line is open or shorted.)
Manual mode select switch (Built into CVT control device)
Manual mode position select switch (Built into CVT control device)