Why Does My Garage Door Reverse Before It Closes?

The 5-minute diagnostic

Your garage door starts closing, gets within a few inches of the floor, then reverses and goes back up. Frustrating — and almost always fixable yourself. Here are the five causes, in order of how often we see them on service calls.

1. The close-force limit is set too sensitive (30% of calls)

Your opener measures how hard it has to push to close the door. If it feels more resistance than expected, it assumes something is in the way and reverses — a safety feature required by UL 325 since 1993.

Over time, rollers get stiffer, hinges stick, and the force needed to close can creep up. Meanwhile your opener's "close force" setting hasn't changed. Result: reverses before closing.

Fix: Find the close-force adjustment on your opener (usually a small screw or digital button labeled "close force" or "down force"). Increase it by a quarter turn, test, repeat until the door closes consistently. Don't crank it up to max — that defeats the safety feature.

2. The down-limit switch is set too low (25% of calls)

The down-limit switch tells the opener where "fully closed" is. If it's set too low (deeper than the actual floor), the door hits the floor, the opener thinks it's hit an obstruction, and it reverses.

Fix: Locate the down-limit adjustment (usually on the opener head, a small screw or digital button). Back it off so the door stops just as it touches the floor — not before, not after.

3. Worn rollers causing resistance near the bottom of the track (20% of calls)

If one or more rollers have worn bearings or flat spots, they create resistance as they reach the bottom curve of the track. The opener reads that resistance as an obstruction.

Fix: With the door halfway open, shake each roller by hand. Any wobble, gritty feel, or resistance to spinning = time for new rollers. We install a full set of sealed-bearing nylon rollers for $135–$210 complete.

4. Dirty or misaligned photo eyes (15% of calls)

Photo eyes (the safety sensors mounted near the floor on each side of the door) must see each other to allow the door to close. If they're dirty, bumped, or one is unplugged, the door will not close and will either sit there or reverse.

Most openers blink a specific code when photo eyes are the problem (LiftMaster = 10 blinks). Check for a solid LED on each sensor — if one is flashing or off, they're misaligned or dirty.

Fix: Wipe both lenses with a dry cloth. Eyeball the alignment — they should point exactly at each other. Gently adjust the wing-nut mounts until both LEDs are steady. Usually a 2-minute fix.

5. A physical obstruction in the track (10% of calls)

A stick, leaf, or small rock can wedge into the bottom of the track and stop the door from seating. With the door open, run your hand along both vertical tracks near the floor — you're feeling for anything that shouldn't be there.

When to call us

If you've tried all of the above and the door still reverses, there's likely a deeper issue: a worn cable beginning to fray near the drum, a slightly bent vertical track, or an opener logic-board fault. Any of these is a same-day fix for us, and we charge the standard $85 service call.

Book a diagnostic

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