
Garage Door Won’t Stay Closed? How to Troubleshoot Reversing Sensors
Your garage door keeps reversing—frustrating, right? But here’s the truth: those “stubborn” sensors are actually life-saving technology. Since becoming mandatory in 1993, photoelectric sensors have prevented over 85% of garage door entrapment fatalities. This complete guide reveals the science behind sensor failures, walks you through DIY troubleshooting for dirt, misalignment, and sunlight interference, and identifies when professional help is needed.








