A Guide to Troubleshooting Garage Door Sensor Repair

A Guide to Troubleshooting Garage Door Sensor Repair

If you have a garage door opener that was installed any time after 1993, it has a garage door sensor that improves safety and prevents injury. (And if your garage door doesn’t have this, it’s time to upgrade with a new installation.) These sensors are great for safety, but they can have issues from time to time. The good news is these garage door repair issues tend to be simple. Most are DIY.

Sensor issues are surprisingly common. When it comes to garage door opener repair, chances are you’ve got a battery or electricity issue, or you’re having a problem with your garage door sensors.

How Garage Door Sensors Work

Garage door sensors work by transmitting a photoelectric beam of light between two sensors located near the bottom of your garage door. If something blocks this path, say a child, a running cat, or the lawn mower, the garage door will instantly reverse itself in operation. This keeps you safe and protects your garage door and possessions from damage.

When Garage Door Sensors Get Dirty

As we mentioned, the garage door sensors sit close to the ground. They tend to get dirty fast. This is especially true in wet and windy weather. Your tires tend to kick up water, dirt, and other debris, which can cause the sensors to malfunction.

If you’re experiencing this type of garage door repair, the first thing we recommend is to take a wet rag and wash off your sensors. Most of the time, this works like a charm.

Stuff in the Way

Another common reason your garage doors are going off is there is actually something in the way, perhaps a small item that has been overlooked. Check the area of your garage door opening, especially at the bottom, and make sure nothing is blocking its path.

When Your Sensor Needs Reshaping

These sensors are vital, but they are made of soft aluminum that can easily become bent or out of shape. Walking by them or kids playing near them can cause misconfigurations and disrupt the signal.

Fortunately, these fixtures are quite malleable so they can easily be bent back into shape without damaging them.

When Your Sensor Needs Realignment

Another possibility is that your sensors are slightly out of alignment with each other. Fortunately, this is a fairly easy garage door repair to fix. Tie a string between the sensors and see if it is level. Make sure the sensors are directly opposite each other. This will ensure a direct delivery of the signal.