How to fix :error code 4-6 liftmaster ?

Instructions for Fixing Errors Error Code 4-6 Liftmaster


Liftmaster is a popular brand of garage door openers that are known for their reliability and durability. However, like any other electronic device, Liftmaster garage door openers can encounter errors that can cause inconvenience to the users. One of the most common errors that Liftmaster users encounter is error code 4-6. This error code indicates that there is a problem with the safety sensors of the garage door opener. In this article, we will provide you with detailed instructions on how to fix errors error code 4-6 Liftmaster.

What Causes Error Code 4-6 Liftmaster?

Before we dive into the instructions on how to fix error code 4-6 Liftmaster, it is important to understand what causes this error code. Error code 4-6 Liftmaster is caused by a malfunction in the safety sensors of the garage door opener. The safety sensors are located on either side of the garage door and are responsible for detecting any obstacles in the path of the garage door. If the safety sensors are not functioning properly, the garage door opener will not operate.

Step-by-Step Instructions for Fixing Error Code 4-6 Liftmaster

Now that we have a basic understanding of what causes error code 4-6 Liftmaster, let’s dive into the step-by-step instructions on how to fix this error code.

Step 1: Check the Safety Sensors

The first step in fixing error code 4-6 Liftmaster is to check the safety sensors. The safety sensors are located on either side of the garage door, near the bottom. Check to make sure that the sensors are clean and free from any debris. If there is any debris on the sensors, clean them with a soft cloth.

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Step 2: Check the Wiring

The next step is to check the wiring of the safety sensors. Make sure that the wiring is properly connected and that there are no loose connections. If there are any loose connections, tighten them.

Step 3: Check the Alignment

The third step is to check the alignment of the safety sensors. The sensors should be aligned with each other and should be facing each other. If the sensors are not aligned, adjust them until they are.

Step 4: Check the Power Source

The fourth step is to check the power source of the garage door opener. Make sure that the garage door opener is properly plugged in and that there are no issues with the power source. If there are any issues with the power source, resolve them before proceeding.

Step 5: Test the Garage Door Opener

The final step is to test the garage door opener. Close the garage door and press the button to open the garage door. If the garage door opens without any issues, the error code 4-6 Liftmaster has been resolved.


Error code 4-6 Liftmaster can be a frustrating issue for Liftmaster users. However, by following the step-by-step instructions provided in this article, you can easily fix this error code and get your garage door opener back to working properly. Remember to always check the safety sensors, wiring, alignment, and power source before testing the garage door opener. By doing so, you can ensure that your garage door opener is functioning properly and safely.

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You can refer more 9 error code 4-6 liftmaster below

1.What Does LiftMaster Error Code 4-6 Mean? Here’s How To Fix It.

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2.Error Code 4-6 | Chamberlain Group

  • Descriptions: Users will experience Error Code 4-6 when the operator detects that the safety sensors are blocked or not aligned when trying to close the door.
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3.How to align safety reversing sensors – the good guys garage door co.

  • Descriptions: This indicates the sensors are misaligned or obstructed. On a Security+ 2.0 garage door opener with an LCD display, the LCD display will show “Error code 4-6 …
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4.What to Do LiftMaster Error Code 4-6 | Spectrum Overhead Door

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5.Liftmaster Error Code 4-6 [How to Fix] – ViralTalky

  • Descriptions: 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 …
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6.How To Fix Liftmaster Error Code 4-6 Yellow Light Problem

  • Descriptions: The error code 4-6 of Liftmaster indicates that the garage door is not opening automatically and the lights are flashing continuously. How Do I Fix Liftmaster …
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7.7 Steps To Resolve Liftmaster Error Code 4-6 Yellow Light

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8.Resolve Liftmaster Error Code 4-6 Yellow Light | Smart Home Devices

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