Liftmaster Error Code 4-6 [How to Fix]

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

On security+ 2.0 garage opener, the Up-arrow flashes 4 times, followed by the Down arrow flashing 6 times.

When it happens, it indicates that inter sensors are misaligned, or something is obstructed between two sensors. This means, garage door opener will not close and light bulbs flash.

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. Ensure 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.

Change Mounting Brackets

You should note that the orientation of the mounting brackets can also lead to problems with the sensor alignment. And a lot of users have mentioned that changing the mourning brackets, it helped them to dismiss alignment problems.

Therefore, if you are not able to fix the alignment by adjusting these brackets, you can simply try getting replacement of brackets. Also, note that the compatibility of mounting brackets can differ based on the layout of your garage door.

Contact Liftmaster

If none of the above solutions helped, you can contact the company’s customer support. Because if you don’t know how to separate defective components, help from an expert will fasten the troubleshooting process.

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

Liftmaster Error Codes:
Liftmaster Error Code 4-1 [How to Fix]
Liftmaster Error Code 4-2 [How to Fix]
Liftmaster Error Code 4-3 [How to Fix]
Liftmaster Error Code 1-5 [How to Fix]