4-1
Moderate
LiftMaster · Garage Door Openers
Door movement obstruction or excessive force detected.
Quick Answer
Error code 4-1 on your LiftMaster Garage Door Openers means: Door movement obstruction or excessive force detected.. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Disconnect opener and manually test door balance.
2
Inspect tracks/rollers for obstruction or damage.
3
Relearn force and travel settings.
4
Lubricate hinges/rollers per manufacturer guidance.
5
Have door springs serviced by professional if unbalanced.
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
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