Garage Door Still Won’t Close After Sensor Alignment?

Why won’t a garage door close after the sensors are aligned?

The remaining cause may be pinched or corroded low-voltage wiring, a failed splice, moisture intrusion, damaged sensor pigtails, an intermittent connector, or a failed sensor pair. These faults require electrical testing rather than further alignment.

Next checks shown in the video

• Inspect staples and attachment points for crushed low-voltage wire.
• Check splices and connectors for corrosion, looseness, or moisture.
• Look for damaged pigtails where the wire enters each sensor.
• Confirm whether the fault follows the wiring or the sensor pair.

Why Valiant Documents The Procedure

Customers should be able to see what failed, understand the repair plan, review the completed work, and know how the system was tested. Valiant uses field photos, video, written findings, and completion notes to make the repair visible—not mysterious.