- myQ door position sensor misaligned or battery dead
- Sensor magnet too far from sensor on door
- Safety photo-eye sensors blocked or misaligned
Problem Description
Your myQ app opens the garage door fine but gives an error when trying to close it. The app shows close error or unable to close leaving your garage unsecured. Chamberlain requires the myQ door sensor to confirm door position before allowing remote close and this sensor is the root cause of most close errors.
Symptoms
- App opens door but gives error when trying to close
- Close button grayed out or shows close error
- Door starts closing then reverses back open
- App says door position unknown or sensor not responding
- myQ shows door open but wall button closes it fine
- Close command works sometimes but fails most of the time
Recognize these? Here's what usually causes it.
Common Causes
- myQ door position sensor misaligned or battery dead
- Sensor magnet too far from sensor on door
- Safety photo-eye sensors blocked or misaligned
- Door obstruction triggering safety reverse
- myQ sensor battery depleted preventing position reporting
- WiFi connection too weak for reliable command delivery
Most fixes happen in the first 3 steps.
Never bypass safety photo-eye sensors. These prevent the door from closing on a person child or pet. A closing garage door exerts hundreds of pounds of force. Fix sensors rather than bypassing them.
Tools & Requirements
These tools will help you complete this fix.

Clean microfiber cloth
MR.SIGA Microfiber Cleaning Cloth,Pack of 12,Size:12...

Replacement batteries
Energizer Ultimate Lithium AA Batteries, Long Lastin...
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Step-by-Step Solution
Fix the myQ Door Sensor
The myQ tilt sensor on the top garage door panel tells the app if door is open or closed. If battery is dead or it shifted the app refuses to close. Replace the CR2450 battery. Verify sensor is mounted flat on top panel and LED blinks when door moves. Sensor and magnet must be within 1 inch when door is closed.
Clean Safety Photo-Eye Sensors
The two sensors at bottom of door tracks must see each other. If dirty or misaligned the door reverses when closing. Wipe both lenses with soft cloth. Each should show solid green LED. If one shows amber or flickers the beam is misaligned. Adjust bracket until both show solid green.

Needed for this step
MR.SIGA Microfiber Cleaning Cloth,Pack of 12,Si...
$13.99Check for Obstructions
Walk the entire door path checking for anything blocking sensors or door travel. A broom handle near the sensor a leaf on the lens or a box too close all trigger safety reverse. Move everything 6 inches away from sensor beam and door travel area.
Test with Wall Button
Press the wall button to close the door. If it closes fine but app does not the issue is the myQ sensor or WiFi not the door mechanism. If wall button also fails the problem is safety sensors or opener itself.
Improve WiFi Signal
The myQ hub needs strong WiFi for close commands. Check hub LED. Solid blue means good WiFi. Blinking blue means weak. Move hub closer to an access point or add WiFi extender in garage. Cloud verification is required for remote close.
Quick Solutions
Still having issues? This is usually the deeper cause below.
If this comes back after following these steps, check whether a recent app or firmware update reset a default setting — the fix works, but the setting gets reverted silently.
The myQ app adds a 10-second delay with beeping before closing remotely. This is normal and required by UL safety standards for remote garage doors.
Battery-related failures are almost always flagged too late — the device degrades silently for days before the app catches up to what's actually happening.
- myQ door position sensor misaligned or battery dead
- Sensor magnet too far from sensor on door
- Safety photo-eye sensors blocked or misaligned
- Door obstruction triggering safety reverse
- myQ sensor battery depleted preventing position reporting
Before you go — try one of these (they fix most cases).
Most popular upgrades chosen by Chamberlain myQ Garage Door Opener owners.

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Official Manufacturer Manual
If you need the complete manufacturer documentation for advanced setup, wiring diagrams, or detailed specifications, you can download the official manual below. The manual includes full technical instructions directly from the manufacturer and may help if your issue requires deeper troubleshooting.
Download the Official Chamberlain myQ Garage Door Opener ManualSource: chamberlaingroup.com
Need More Help? Chamberlain Support
Note: The contact information below connects you directly to Chamberlain's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.





