Safety sensor issues can prevent an automatic garage door from closing normally. Dirt, obstruction, alignment, wiring, or component failure may be involved.
Common signs
- Door starts closing and then reverses
- Door refuses to close with the opener
- Sensor lights look different from normal
- A sensor was bumped or shifted
Safety note: Do not defeat or bypass a safety system to make the door close.
For broader symptoms, see garage door won’t close or opener repair.
Garage door help in Daly City
Call (650) 912-1865
Need help with your garage door?
Call and describe what the door is doing. We’ll help you get the right garage door service for the problem.