3-5 Moderate Moderate DIY

Chamberlain Garage Door Opener 3-5 — Travel module / encoder issue

Chamberlain Garage Door Opener · Error code 3-5

What 3-5 Means

The travel module (encoder) inside the motor head has lost position. Travel limits must be re-learned, or the travel module needs replacement.

Symptoms

  • 3 flashes then 5 flashes
  • Door overshoots or undershoots its stopping point
  • Up/down limits will not save

Common Causes

1
Travel limits lost after power loss

Memory cleared after long outage.

2
Failed travel module

Encoder gear stripped or sensor failed.

How to Fix It

  1. Re-program travel limits per the model's instructions (press and hold the Adjust or Travel button on the motor head).
  2. If limits will not learn, replace the travel module.
  3. On belt-drive units, the travel module is usually a clip-in module near the motor.

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.

Common replacement Chamberlain travel module View on Amazon→

More Chamberlain Garage Door Opener Codes

1-1 1-1 — Low voltage / wall control wire issue 1-2 1-2 — Wall control / safety wire shorted 1-3 1-3 — Door control wire issue / lock button stuck 1-4 1-4 — Safety sensors misaligned or obstructed 1-5 1-5 — Safety sensor wires reversed or shorted 1-6 1-6 — Safety sensor obstruction or wire fault

All Chamberlain codes → All garage door opener codes →

Verified against manufacturer documentation: chamberlain.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.