With kids in and out for basketball practice, endless strands of Christmas lights and cords, and the dog running in and out of the garage, your garage door sensors can get knocked around pretty easily. The good news is that they’re also easy to put back in place. We found a great step-by-step way to check and see if your garage door won’t close because of a sensor error.
First off, your sensors just may need to be cleaned off, so try to gently remove any dust or dirt first and see if that works. If that doesn’t work, it could be electrical. The sensors have to be aligned with each other and also have to be connected correctly to the garage door system in order to work. According to Lift Master, issues with the safety sensor wiring typically occur because of a poor connection, incorrectly connected wires, or a short in the wire from a staple.