The sliding door on my 07 Odyssey is closed and won't open anymore. What can I do to get it open again o how would I be able to get the inside panels off with the door shut?

SOURCE: 2003 Honda Odyssey Passenger Sliding Door Lock

I had problem with the door not opening from the inside because my kids put the child latch on.

SOURCE: Sliding power doors will not open

Just had the same problem with my '05 van. I put the Master Switch in the off position. I pulled fuse #7 on the driver side sub panel, located just above the engine hood release. I then disconnected the neg. terminal on the battery. I manually opened the pass. side slider and closed it.

I reconnected the battery and replaced fuse #7. I put the master door switch in the on position. I activated the auto door switch, and it worked.

SOURCE: 2002 Honda Odyssey: sliding door jolts/reopens when closing

Please check the aft track roller assembly. It is easiest to inspect from the rear of the van looking forward when the door is open. You'll see the rear hinge assembly clearly. The track rollers cannot be seen but you can pull outboard on the rear edge of the door--the door should not move outboard more than 1/8 of an inch. If it moves out more than this or feels sloppy, suspect damaged/missing track rollers. This will cause the hinge to chatter in the track and "jolt". It will also cause the door to misalign during the close phase preventing the close motor from properly engaging.
Replacing this part is no easy task but doable if you are good with cars. Check back here for more details if you want to try it, otherwise get a competent mechanic or the Honda dealership to do it.

SOURCE: 2003 Honda Odyssey - Passanger side sliding door won't lock.

Try to disconnect the battery for about 30 minutes this should reset the computer for you.

SOURCE: 2009 Honda Odyssey Sliding door panel removal

Hidden screw underneath the power window switch, you have to remove, use a dull knife to gently pry up on the plastic molding, it should pop out with relative ease then you will see the screw.