Liftmaster Error Code 4-6 – did your garage door opener is not closing from your remote control? In this article, I’ll show you an easy and effective to get rid of Liftmaster error 4-6. Major root causes are obstruction issue or alignment issue.

On security+ 2.0 garage opener, the Up-arrow flashes 4 times followed by Down arrow flashing 6 times. This means, garage door opener will not close and light bulbs flash. When it happens, it indicated that inter sensors are misaligned or something is obstructed between two sensors.

Liftmaster Error Code 4-6 [How to Fix]

If your garage door opener will not close from your remote control, and the opener lights are flashing, your security+ 2.0 garage door opener’s LCD will display “Error 4-6 sensor momentarily obstructed,” this indicated that sensors are misaligned or obstructed.

First of all, to get rid of Liftmaster error code 4-6, verify if your safety reversing sensors are installed or obstructed or out of alignment. Rearrange both sensors to confirm both LEDs are steady and not flickering. Make sure nothing is dangling or hanging on the door that would interject the sensor’s route while closing.

You can also follow these troubleshooting steps:

  1. Check to make sure the Amber LED (sending sensor) and Green LED (receiving sensor) are glowing steadily.
  2. Align the sensor so their lenses are pointing each other.
  3. Make sure there is no obstructive material. If they are obstructed, remove the obstruction and the opener will continue the normal process.
  4. You can try elevating the sensor slightly above the ground by changing the brackets of the rail.
  5. If you put it higher than 6 inches above the garage floor, it may not detect any obstructing material underneath.

Conclusion: If the above procedures do not work, untie both sensors and realign them and then test again. Most common issues are obstruction and alignment so, check the obstruction first as sometimes spider web may block the infrared rays (the lighting path between transmitter and receiver). I hope the above article on Liftmaster Error Code 4-6 has helped you to solve your issue.

FAQs

How you clear Liftmaster error code 4-6?

Verify if your safety reversing sensors are installed or obstructed or out of alignment. Rearrange both sensors to confirm both LEDs are steady and not flickering.

How do I fix a Liftmaster sensor?

Align the sensor so their lenses are pointing each other and make sure there is no obstructive material. If they are obstructed, remove the obstruction and the opener will continue the normal process.

Why is my Liftmaster light blinking?

On security+ 2.0 garage opener, the Up-arrow flashes 4 times followed by Down arrow flashing 6 times. This means, garage door opener will not close and light bulbs flash.

Why is my Liftmaster not closing?

It indicates that inter sensors are misaligned or something is obstructed between two sensors. Make sure nothing is dangling or hanging on the door that would interject the sensor’s route while closing.

Why does m Liftmaster not close?

It might be the lock button or the safety reversing sensors.

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