Garage Door Won't Close: 8 Common Causes and Fixes

Quick Diagnosis: Match Your Symptom to the Cause

Before diving into individual causes, use this symptom table to narrow down the likely problem:

Cause 1: Safety Sensor Problem (Most Common)

The #1 cause of a garage door that reverses before closing is the safety sensors — the pair of photo eye devices mounted at the bottom of the door tracks on each side, about 4–6 inches above the floor. These sensors project an invisible infrared beam across the door opening. If anything breaks that beam — an object, a person, a spider web, or even misalignment — the opener reads it as an obstruction and refuses to close the door.

Diagnosis

Look at both sensor LEDs right now (the small lights on each sensor housing):

• Both LEDs steady → Sensors are working; look at other causes
• One LED blinking → Sensors are misaligned or blocked
• One or both LEDs off → Power or wiring problem

Fixes

Misalignment: Loosen the wing nut on the blinking sensor's bracket (just enough to pivot it), slowly rotate the sensor until its LED goes steady, then tighten. Both LEDs must be steady before the door will close.

Dirty lenses: Wipe the lens face on both sensors with a soft cloth and rubbing alcohol. Spider webs, dust, and condensation are frequent culprits.

Sunlight interference: If the problem only happens in the afternoon, direct sun is likely blinding the receiving sensor. Create a small cardboard sun visor above the receiving sensor lens.

Obstructions: Get down to floor level and look across the beam path. Cobwebs, a garden hose, fallen weatherstrip — anything in the 4–6" zone between the sensors can break the beam.

For a comprehensive sensor troubleshooting walkthrough, see our garage door safety sensor guide.

Cause 2: Travel Limit Out of Adjustment

Every garage door opener has "travel limit" settings — they tell the opener how far the door should travel in both directions (up and down) before stopping. When the down limit is set too far, the opener reaches the floor, keeps trying to push the door further, feels the resistance as the door hitting an obstruction, and reverses. When the down limit is set too short, the door stops before fully reaching the floor.

Diagnosis

Signs the down limit is the problem:

• The door reaches the floor but then immediately reverses (limit set too far)
• The door stops 2–6 inches above the floor (limit set too short)
• This problem appeared after the opener was installed, serviced, or after a power outage reset

How to Adjust Travel Limits

Older chain-drive openers (adjustment screws): Look for two adjustment screws on the opener motor unit, usually labeled "UP" and "DOWN" or marked with arrows. Turning the DOWN screw clockwise typically increases the down travel distance (door goes lower). Make small adjustments (quarter turns) and test after each.

Newer electronic openers (button programming): Many modern openers have a "set limits" programming mode activated through the learn button or a menu on the wall panel. Consult your opener manual — the procedure varies by brand (LiftMaster, Chamberlain, Genie, Craftsman all have slightly different methods). The general process involves putting the opener into programming mode, letting the door travel to the down position, then confirming that position as the limit. See our opener reset and reprogramming guide for brand-specific steps.

Safety note: The down travel limit interacts with the close force setting. If you increase the down limit without also checking the force, the opener may push too hard against the floor. Always test both after adjustment.

Cause 3: Close Force Set Too Low

The force setting determines how hard the opener pushes the door before giving up and reversing. If the close force is set too low — either from the factory or because someone adjusted it — the door may reverse even against normal friction from rollers, weatherstrip compression, or slightly increased resistance from a partially obstructed track.

Signs It's a Force Issue

• Door reverses consistently at the same point during the descent, but there's no visible obstruction
• Problem is worse in cold weather (friction increases as grease thickens)
• Manual operation feels normal (door moves freely by hand), but the opener can't complete the travel

Adjusting the Close Force

On screw-type openers: look for a FORCE or PRESSURE adjustment knob near the limit screws. Turn it slightly clockwise (toward +) to increase force.

On electronic openers: enter the force adjustment programming mode per your manual. Typically involves holding a button and using the remote or wall button to increase/decrease force.

Important: Don't increase force to compensate for a mechanical problem — if the door has a binding roller, bent track section, or weak springs, increasing force is a temporary workaround that accelerates wear. Fix the underlying mechanical issue instead. The force setting should only be adjusted if the door moves freely by hand and the opener is genuinely underperforming.

After adjusting force, always run the 2x4 test: place a 2x4 flat under the center of the door and close it. The door should reverse within 2 seconds of contacting the board. If the force is set so high that the door doesn't reverse, it's too high — reduce it.

Cause 4: Remote Control Issue

If the door closes fine from the wall button but not from the remote, the problem is isolated to the remote — not the door, opener, or sensors. This is a simple problem to resolve.

Troubleshooting the Remote

1. Battery first: Even if the remote's LED lights up when you press the button, the battery may be too weak to transmit reliably. Replace with a fresh battery (usually a 9V or coin cell) and test again. This fixes most remote issues.
2. Range test: Stand closer to the garage and try again. If it works up close but not from a distance, the battery is weak or the antenna on the opener is damaged or not fully extended (look for a short wire hanging from the opener motor — it should hang down, not be coiled or tucked).
3. Reprogram the remote: If battery replacement doesn't work, reprogram the remote. On most openers: press the "Learn" button on the motor unit (the LED will illuminate), then press and hold the remote button until the opener light flashes or you hear two clicks. See our complete garage door opener reset guide for brand-specific steps.
4. Check for interference: LED light bulbs in the opener housing can interfere with remote frequency signals. If the problem appeared after changing the opener's light bulb, replace the bulb with an incandescent or a "garage door opener compatible" LED bulb specifically designed to avoid frequency interference.
5. Replace the remote: If none of the above works, the remote's circuit board may have failed. Universal replacement remotes compatible with most openers are available for $15–$40 at hardware stores.

Cause 5: Track Obstruction or Misalignment

The garage door runs on metal tracks on both sides. If either track has an obstruction, dent, gap in a joint, or is significantly out of alignment (pulled away from the wall or tilted), the rollers will bind at that point, creating resistance that makes the opener reverse — or in severe cases, the roller can actually jump out of the track.

How to Inspect the Tracks

1. Unplug the opener and manually operate the door by hand (pull the red release cord first to disengage the opener).
2. Move the door slowly up and down. Does it move freely throughout the entire travel range? Or does it bind, stick, or require extra force at a specific point?
3. When you find the binding point, look at the track on both sides at that height. Look for: debris inside the track (dried leaves, dirt buildup, small objects), a visible dent or crimp in the track, a gap at a track joint, or a section of track that's pulled away from the wall bracket.

Fixes

Debris: Clean the inside of the track channel with a damp cloth. Don't use lubricant on the tracks — tracks should be clean and dry. Lubrication goes on the rollers, springs, and hinges.

Minor dents: A rubber mallet can gently reshape a small dent from the outside of the track. Don't use a hammer directly — you'll create a new dent.

Track misalignment (brackets pulled from wall): Loosen the bracket mounting bolts, re-plumb the track (use a level), and retighten. The vertical track should be plumb (perfectly vertical) and the horizontal section should slope slightly downward toward the opener (about ¼" per foot).

Severely damaged track: Track sections can be replaced, but this is a job for a professional — incorrect track installation can cause the door to come off track during operation, which is dangerous. Read more in our garage door off-track repair guide.

Cause 6: Broken or Weak Springs

Garage door springs do the heavy lifting — they counterbalance the door's weight so the opener motor only has to provide minimal force to move the door. A broken spring means the opener must lift or lower the full weight of the door (which can be 150–300+ pounds), which it cannot do reliably — or safely.

Signs of Spring Problems

• The door is very heavy to move manually (more than 10 lbs of effort to move by hand)
• Visible broken spring: torsion springs run horizontally above the door opening; extension springs run along the horizontal track sections. A break is usually obvious — the spring has a gap in it.
• The door hangs crooked or one side drops lower than the other (usually means one spring in a two-spring system has broken while the other is intact)
• Loud bang or pop sound from the garage (often reported by homeowners at the moment a torsion spring breaks)

What to Do About a Broken Spring

Torsion spring replacement costs $150–$350 for a professional — including parts and labor. This is a non-negotiable professional-only repair.

For full details on spring types, costs, and what to expect, see our broken garage door spring guide.

Cause 7: Door Lock Engaged

This is the simplest and most overlooked cause. Many garage doors have a manual slide lock (a bar that slides horizontally into the track on one or both sides) or a T-handle lock in the center of the door. If the lock is engaged, the opener motor will strain against the lock, then give up and reverse — or the trolley will disconnect from the door entirely without moving it.

How to Check

Look at the center of the door from inside the garage. Is there a T-handle or slide lock in the locked position? Is there a slide bar inserted into the track on either side? Also check whether the "lock" function has been enabled on the wall console — many modern smart openers (LiftMaster myQ, etc.) allow the door to be locked from the app or wall panel, which disables the remote and prevents closing from outside.

Fix

Disengage the manual lock. For wall panel lock mode, check the wall button — some LiftMaster wall panels have a lock button that illuminates when lock mode is active. Press it to toggle off. For myQ/smart opener app locks, check your app.

Cause 8: Opener Failure

After ruling out sensors, limits, force, remote, track, springs, and locks, the opener itself may be failing. Opener failures can be intermittent (works sometimes, fails others) or complete (no response at all). Common failure points include:

Logic Board Failure

The opener's circuit board is the brain. A failing logic board can cause erratic behavior — including refusing to close, closing partway, or closing and reversing unpredictably. Logic board replacement costs $100–$200 in parts; with labor, $150–$300. At that repair cost, many homeowners opt to replace the entire opener instead (new opener installed: $250–$600).

Motor Capacitor Failure

The motor capacitor provides the start jolt to get the motor spinning. A failing capacitor causes the motor to hum but not run, or to run weakly only in one direction. Capacitor replacement is $20–$50 in parts — a worthwhile repair on an otherwise good opener.

Drive System Failure

Chain drive openers: if the chain has come off the sprocket or is severely worn, the motor runs but doesn't move the door. Belt drives: a broken or stretched belt causes similar symptoms. Gear-and-sprocket assemblies on chain drives can strip with age — white plastic debris inside the opener housing is a telltale sign.

When to Replace the Opener

If the opener is more than 10–15 years old and the repair cost exceeds $150, replacement is usually the better investment. Modern openers include battery backup, smartphone control, improved security (rolling code technology), and better reliability. See our opener repair vs replace guide for a full decision framework.

Cold Weather Special Cases

Garage doors have more problems in cold weather than any other season. If your door was working fine and stopped closing when the temperature dropped, here's what to check:

Thickened Lubricant

Old-style petroleum grease becomes thick and sticky in cold weather, dramatically increasing friction on springs, rollers, and hinges. The opener force may no longer be sufficient to overcome the added friction. Solution: clean off old grease and apply a cold-rated silicone or lithium-based garage door lubricant. These remain fluid at temperatures down to -20°F or lower.

Frozen Bottom Seal

If the bottom rubber seal freezes to the concrete floor overnight, the door physically cannot open or close — the opener strains against the frozen seal and reverses. Solution: once: melt the ice with a hair dryer or pour warm (not boiling) water at the threshold. Prevent recurrence by applying a thin coat of silicone spray or WD-40 to the bottom seal and threshold before freezing temperatures arrive each fall.

Spring Tension in Cold

Metal contracts in cold, which reduces spring tension slightly. A spring at the end of its service life may provide adequate tension in summer but too little in winter. If your door is notably heavier in cold weather (test by pulling the release cord and lifting manually), the springs may need replacement or adjustment.

Contracted Tracks

Metal tracks contract in cold, which can reduce clearance between the track and roller, creating binding points. If you can hear grinding or scraping at a specific point in cold weather that disappears when it warms up, track contraction is likely the cause. A technician can assess whether the tracks need adjustment for your climate.

How to Manually Close Your Garage Door

If the opener won't close the door and you need to secure the garage right now, follow these steps:

1. Pull the red emergency release cord. It hangs down from the trolley/carriage (the part that slides along the overhead rail). Pulling it disconnects the door from the opener drive.
2. Manually push the door down by hand. Grip the door handle or the door face and push down steadily. The door should move freely (if not, springs may be broken — call a professional).
3. Lock the door from inside. Use the manual slide lock or T-handle to secure the door after closing it manually.
4. To re-engage the opener: When you're ready to use the opener again, push the door upward until the trolley re-engages with the carriage (you'll usually hear a click). Then test with the opener. On some models, you can simply press the wall button and the opener will pull the door up and re-engage automatically.

Caution: If manually pushing the door down requires significant effort, the springs may be broken. A door with broken springs is very heavy and can drop suddenly if you lose your grip. In that case, call a professional rather than manually closing it.

Garage Door Won't Close — Repair Cost Estimates

Regional Cost Variation

For a comprehensive look at all garage door repair costs, see our complete garage door repair cost guide.

DIY vs Calling a Professional

✅ Safe for DIY

• Cleaning and realigning safety sensors
• Adjusting travel limits (on most openers)
• Replacing remote batteries or reprogramming remotes
• Cleaning track debris
• Applying fresh lubricant
• Disengaging a frozen bottom seal
• Replacing sensors (basic low-voltage wiring)
• Minor track dent repair with a rubber mallet

⚠️ Call a Professional

• Broken or damaged springs — High tension; serious injury risk if mishandled
• Track replacement or major realignment
• Opener logic board or motor repair
• Full opener replacement
• Any situation where you're uncertain of the cause — a $100 service call is far cheaper than a $600 mistake

See our complete DIY vs professional garage door repair guide for a deeper decision framework.

Frequently Asked Questions