One problem related to transmission stuck in gear has been reported for the 2006 Nissan Titan. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Nissan Titan based on all problems reported for the 2006 Titan.
Transmission has been stuck in 4th gear while in drive. It. Will switch into park, reverse and neutral. When the truck is put on the computer there are no error codes showing that would require repair therefore Nissan refuses to submit any documentation higher to address this issue with this standard transmission in all of their vehicles. On a side note, I've had 2 other Nissans with a central variable transmission that have all done this as well. I've since been able to get rid of those vehicles, but I am stuck with this one.