There could be something lodged in the guide causing the problem.
How to fix a nissan quest automatic sliding door.
It would seem the door is not properly aligned.
Sliding passenger door does not close properly when using the automatic door closing.
After turning of the auto door closing and doing it manually for a few weeks it seems that it works more often than it used to.
Nissan owner channel 1 326 views.
2005 nissan quest automatic sliding door does not close i would advise you check the guide area at the bottom where the door slides.
A nissan quest power sliding door motor replacement costs between 905 and 923 on average.