When a garage door starts down and reverses, refuses to move, or only closes while the wall button is held, the cause can range from a simple sensor issue to a door that should not be forced.
Published by Boise Garage Door Help. Last updated 2026-06-22. This guide is educational and does not replace an on-site diagnosis, professional advice, or manufacturer instructions.
Sensor symptoms to check from a safe distance
Safety sensors near the floor can stop a door from closing when they are blocked, dirty, bumped out of alignment, or affected by glare.
- Door starts closing, then reverses
- Opener light flashes or clicks
- Door closes only when the wall button is held
- Sensor lights are off, blinking, or mismatched
When it may be more than the opener
If the door looks crooked, binds in the track, or has a loose cable, the opener may be reacting to a door problem instead of causing it.
- Door hangs unevenly on one side
- Rollers appear out of the track
- Cable is loose near the bottom bracket
- Door makes a sharp grinding or scraping sound
Details that help with the request
Include whether the door is open or closed, whether the home is unsecured, what the opener does when pressed, and whether you see sensor lights, loose cables, or track damage.
Helpful references
We use primary and authoritative sources where practical. These references help consumers check safety and maintenance basics before requesting service.
