2-3 — LiftMaster 2-3 — Logic Board Component Failure
2-3 indicates a logic board component failure (the 2-x range is the logic-board family). It is not a lost-travel-limits condition; lost travel after a power event is reported as 3-2. (Diagnostic meaning corrected against the official Chamberlain Group / LiftMaster Security+ 2.0 chart; flash-code meanings can vary by opener family — confirm for your exact model.)
- Keep using it?
- Limited use only
- DIY difficulty
- Moderate
- Typical cost
- $80-160
- Verified against
- liftmaster.com ↗
The fix
LiftMaster logic board (model-specific circuit board)
Logic board component failure
Diagnose first: Match the board to your exact model number. On openers more than 8-10 years old, compare the board's cost against a full opener replacement.
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How to fix it
- Power-cycle the opener to rule out a glitch.
- Replace the logic board if 2-3 persists.
Why it happens
Typical signs: Opener unresponsive or behaving erratically · Flash code shown repeatedly · One or more functions fail
- Logic board component failure The 2-x flash range indicates a logic board fault; 2-3 is not a lost-travel-limits code (that is 3-2).
More LiftMaster garage door opener codes
Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: liftmaster.com.