Short answer: A garage door that goes back up is doing what it was designed to do when it senses an obstruction. If it reverses before touching the floor, the cause is usually the safety sensors (blocked, dirty or misaligned). If it touches the floor and then reverses, the close-limit or force setting usually needs adjusting. Do not disable the reversing feature: CPSC links non-reversing openers to deaths and injuries.
Quick diagnosis
| What you notice | Most likely cause | What to check | Call a pro? |
|---|---|---|---|
| Reverses before reaching the floor, light blinks | Sensors blocked or misaligned | Clean and align sensors | If not fixed |
| Touches the floor, then goes back up | Close-limit set too far down | Adjust limit per manual | If unsure |
| Reverses midway | Force too sensitive, or binding track/rollers | Check track for obstructions | Often |
| Reverses only in cold weather | Stiff rollers or lubricant, force setting | Lubricate rollers (not the track) | If it continues |
| Reverses randomly | Loose sensor wiring | Check wire connections | Often |
If it reverses before hitting the floor
Angi explains that misaligned or dirty sensors are among the most common causes of a door that keeps going back up. Clean the lenses, remove obstructions, check both sensor lights are solid and tighten the brackets.
If it reverses after hitting the floor
The opener thinks the floor is an obstruction. Adjusting the close-limit (how far the door travels) usually fixes this. Follow the opener’s manual; on many models there are limit screws or buttons on the motor unit.
Test the reversal monthly
LiftMaster recommends testing the safety reversal regularly: place a 1.5 inch thick piece of wood (or a 2×4 laid flat) on the floor under the door. When the door touches it, it should reverse. If it does not, have the opener serviced and do not use it until it is fixed.
When to call a professional
- Springs or cables are damaged.
- The door does not pass the reversal test.
- Adjusting limits or sensors does not solve it.
- The track is bent or the door binds.
What it usually costs
HomeGuide (2026) lists garage door repair at about $125 to $290 on average, with sensor work around $85 to $100 and opener repair $75 to $300.
Frequently asked questions
Why does my garage door open back up after closing?
Usually the close-limit is set too far, so the opener reads the floor as an obstruction. The force setting can also be too sensitive.
Can I disable the garage door auto-reverse?
No. It is a safety requirement and CPSC warns non-reversing openers can trap and injure people.
Related problems
Sources
- Angi: Why your garage door keeps going back up
- Angi: Why is my garage door sensor not working?
- U.S. CPSC: Non-reversing automatic garage door openers are a hazard (PDF)
- LiftMaster: UL 325 safety standards
- HomeGuide: Garage door repair cost (2026)
This guide is general information, not a substitute for an inspection by a licensed professional. See our disclaimer.