House Problem Guide

Category: Garage Door

Garage doors that will not close or reverse, and what the opener is telling you.

  • Garage Door Keeps Going Back Up: Why It Reverses and How to Fix It

    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 noticeMost likely causeWhat to checkCall a pro?
    Reverses before reaching the floor, light blinksSensors blocked or misalignedClean and align sensorsIf not fixed
    Touches the floor, then goes back upClose-limit set too far downAdjust limit per manualIf unsure
    Reverses midwayForce too sensitive, or binding track/rollersCheck track for obstructionsOften
    Reverses only in cold weatherStiff rollers or lubricant, force settingLubricate rollers (not the track)If it continues
    Reverses randomlyLoose sensor wiringCheck wire connectionsOften

    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

    This guide is general information, not a substitute for an inspection by a licensed professional. See our disclaimer.

  • Garage Door Won’t Close: Sensors, Track and Opener Fixes

    Short answer: Most of the time a garage door that will not close (or reverses and the opener light blinks) is a safety sensor problem: the photo eyes near the floor are blocked, dirty or out of alignment. Clean the lenses, remove anything in the beam, and make sure both sensor lights are solid. If the sensors are fine, check the track, the remote and the close-limit setting. Broken springs or cables are a job for a pro.

    Quick diagnosis

    What you noticeMost likely causeWhat to checkCall a pro?
    Door goes down a bit, then reverses; opener light blinksSafety sensors blocked or misalignedClean lenses; check sensor lightsIf they will not align
    Closes with the wall button held, not the remoteSensor or remote issueCheck sensors, then remote batteryRarely
    Door stops or reverses near the floorClose-limit or force settingSee opener manualIf unsure
    Door is crooked or jumps the trackTrack or roller damage, or a broken cableDo not operate itYes
    Opener hums but door does not moveBroken spring or disconnected trolleyDo not lift itYes

    Check the safety sensors first

    1. Look at the two small sensors near the bottom of the tracks. Each has a light.
    2. Remove anything in the beam, including cobwebs, leaves or items stored nearby.
    3. Wipe the lenses with a soft cloth.
    4. If a light is off or flickering, gently adjust that sensor until it is solid. Make sure wires are connected.

    Why the sensors matter

    Federal rules require automatic reversing on residential openers, and CPSC warns that openers that do not reverse can trap and injure people, especially children. Never tape over or bypass sensors.

    Other causes

    • Weak remote battery (try the wall button).
    • Close-limit setting that thinks the floor is higher than it is.
    • Bent track or worn rollers.
    • A disengaged trolley after someone pulled the emergency release.

    When to call a professional

    • A spring is broken, or a cable is loose or frayed. These are under high tension and dangerous.
    • The door is off the track or crooked.
    • The opener does not respond after the sensors and remote are checked.

    What it usually costs

    HomeGuide (2026) lists garage door repair at about $125 to $290 on average, sensor repair about $85 to $100, spring replacement $120 to $350, and opener repair $75 to $300.

    Frequently asked questions

    Why does my garage door close only when I hold the button?

    Holding the wall button overrides the sensors on many openers. It usually means the safety sensors are blocked or misaligned.

    Can I fix a broken garage door spring myself?

    It is not recommended. Springs store enormous tension and can cause serious injury. Call a trained technician.

    Related problems

    Sources

    This guide is general information, not a substitute for an inspection by a licensed professional. See our disclaimer.