Garage Door Won't Close? 7 Common Causes & How to Fix Them

The number-one culprit. The photo-eye sensors near the floor on each side must "see" each other. A leaf, cobweb, parked bike, or knocked sensor breaks the beam and the door reverses for safety. Wipe the lenses and make sure both are aimed at each other (the indicator lights should be solid).

In Miami's bright sun, lenses get hazy and direct sunlight can blind a sensor at certain times of day. Clean them gently and shade-check if the problem happens only in the afternoon.

If the opener thinks the floor is lower than it is, it reverses to avoid "crushing." The close-limit screw on the opener may need a small adjustment.

A small rock, hardened grease, or a bent track can stop the door. Inspect the tracks for debris or damage.

If the door is heavy, jerky, or crooked, a failing spring or cable may be the issue — this needs a professional.

Dead remote batteries or a stuck wall button can send mixed signals. Try closing from a different control.

A door that closes partway and jams may have jumped its track — stop using it and call a pro to avoid damage.