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Why Won't My Garage Door Close? 7 Common Causes (and How to Fix Them)

  • Writer: Maoz Raz
    Maoz Raz
  • Jun 16
  • 2 min read

A garage door that won't close is more than an annoyance — it's a security and safety risk. Before you call anyone, here are the seven most common reasons, starting with the ones you can often fix yourself.

1. Misaligned safety sensors

This is the number one cause. Two small sensors near the bottom of each track must "see" each other. If one is bumped out of alignment, the door refuses to close (and the opener lights often blink). Gently realign them until both LEDs are steady.

2. Dirty or blocked sensors

Spider webs, dust, or a stray object in the sensor's line of sight will stop the door. Wipe the lenses clean and clear anything between them.

3. Something in the door's path

The door's auto-reverse will stop it if it detects an obstruction on the floor — a trash can, a tool, even a small toy. Clear the threshold.

4. Limit settings are off

The opener has travel limits that tell it how far to move. If they're set wrong, the door may reverse before closing. This adjustment is on the opener motor, but get it wrong and the door can slam — so call a pro if you're unsure.

5. A broken spring

If the door is too heavy for the opener because a spring has failed, it won't close properly. You may see a gap in the spring coil. Don't force it — this needs a technician.

6. Frayed or broken cables

The lift cables on either side of the door can snap or come off the drum, throwing the door off balance. This is a repair, not a DIY fix.

7. Worn or damaged rollers and tracks

Bent tracks or seized rollers cause the door to bind and stop. If the door looks crooked, stop using it to avoid further damage.

When to call us

If you've checked the sensors and path and the door still won't close — or if you suspect a spring, cable, or track problem — it's time for a professional. Oxnard Garage Doors offers 24/7 same-day service across Oxnard and Ventura County. Call (805) 725-6464 or book online.

 
 
 

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