1-6
Moderate
LiftMaster · Garage Door Openers
Communication fault between opener controller and accessory module.
Quick Answer
Error code 1-6 on your LiftMaster Garage Door Openers means: Communication fault between opener controller and accessory module.. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Power cycle opener for 60 seconds.
2
Check accessory module wiring/connectors.
3
Disconnect nonessential accessories and retest.
4
Reconnect modules one-by-one to isolate fault.
5
Replace failed accessory module if identified.
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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