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Error Code 4-2

Excessive Opening Force Detected

Error Description

Users will encounter Error Code 4-2 when the operator detects too much force being used when trying to open the garage door. 


Symptoms of Error

The garage door stops before reaching the full open position.


Causes

This error can be caused by a variety of issues.


How to Fix

This is best fixed by a Dealer. Use myQ Diagnostics in the myQ app, How to Use myQ Diagnostics, or find a Dealer near you by clicking on the link below.


Locate a dealer >


View a Help Video

How to Adjust Travel Limits on a LiftMaster Garage Door Opener with Manual Adjustment Controls

This video demonstrates how to adjust the travel limits on a LiftMaster garage door opener with manual adjustment controls.

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Error Code 4-2 | Chamberlain Group