LiftMaster · Garage Door Opener Serious

1-5 — LiftMaster 1-5 — No RPM Detected at Start of Movement

Flash code 1-5 means the opener detected no RPM (no motor rotation feedback) within the first second of movement. It is not a motor overcurrent/thermal code.

Keep using it?
Limited use only
DIY difficulty
Easy
Verified against
liftmaster.com ↗

How to fix it

  1. Pull the emergency release and move the door by hand to check for binding.
  2. Inspect the motor, gear/sprocket, and RPM-sensor wiring.
  3. If the door moves freely by hand but the motor will not turn, the motor or logic board needs service.

Why it happens

Typical signs: 1-5 flash on the opener · Motor hums or does nothing at start · Door does not move when commanded

  • Motor / RPM-sensor or wiring fault The logic board is not seeing rotation feedback from the motor.
  • Mechanical bind A jammed trolley, gear, or seized motor can prevent rotation at start.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • Torsion spring (sized to door) Common replacement
    Amazon →
  • Nylon garage door rollers Common replacement
    Amazon →
  • White lithium garage door lube Common replacement
    Amazon →

More LiftMaster garage door opener codes

1-1 1-1 — Safety Sensor Obstructed, Misaligned, or Disconnected 1-2 1-2 — Safety sensor wire shorted or reversed 1-3 1-3 — Door control or wire issue 1-4 1-4 — Safety sensors misaligned 1-6 1-6 — Unexpected RPM After Stop at Open 2-1 2-1 — Logic Board Component Failure

All LiftMaster codes → All 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.