Home Fault Codes

Craftsman Opener Error Code 4-1: Meaning and Fix

4-1
How 4-1 appears on a Craftsman opener display.
Craftsman opener code 4-1: opener (Craftsman openers are built by Chamberlain Group; a generic Chamberlain Group part or opener image is shown)
Chamberlain Group product image, chamberlain.com

Also shown as: 41, Up 4 Down 1

Reading the opener display

A garage door opener reports faults through blinking LEDs on the motor head, a diagnostic window on the logic board, or the wall control. Count the flashes slowly and repeat the count before you decide what you saw. Craftsman openers follow the Chamberlain flash chart.

Craftsman garage door openers are made by the Chamberlain Group under license, so they share the LiftMaster and Chamberlain diagnostic codes. Look for a model number starting with 139. on the label. Check the model label on your unit before using any chart.

What causes 4-1

How to fix it

  1. Check the door by hand for smooth travel.
  2. Lubricate rollers and hinges (not tracks).
  3. Re-run the limit and force setup.
  4. Inspect for obstructions on the floor line.
  5. Replace the travel module or call a technician if it persists.

Parts you may need

PartPart no.Buy
Travel module kit041D8071-4Find part
Gear and sprocket kit041A5585Find part

Part numbers are OEM references; confirm fit by your model number before ordering. Some links are affiliate links; we may earn a commission at no extra cost to you.

Questions

What causes 4-1 on a Craftsman opener?

Excess force or travel readings that make the door bounce back.

Can I raise the force?

Only a little; an out-of-balance door must be fixed, not forced.

Is it a pro job?

If balance or springs are involved, yes.

Other Craftsman opener codes

Craftsman opener code Yellow Learn LED rapid flash: opener (Craftsman openers are built by Chamberlain Group; a generic Chamberlain Group part or opener image is shown)Yellow Learn LED rapid flashStuck button on a remote or keypadCraftsman opener code 1-1: safety sensor pair (Craftsman openers are built by Chamberlain Group; a generic Chamberlain Group part or opener image is shown)1-1Safety sensor wire open or sensors not connectedCraftsman opener code 1-2: safety sensor (Craftsman openers are built by Chamberlain Group; a generic Chamberlain Group part or opener image is shown)1-2Safety sensor wire shorted or reversedCraftsman opener code 1-3: wall control panel (Craftsman openers are built by Chamberlain Group; a generic Chamberlain Group part or opener image is shown)1-3Door control wire shortedCraftsman opener code 1-4: safety sensor with sunblocker (Craftsman openers are built by Chamberlain Group; a generic Chamberlain Group part or opener image is shown)1-4Safety sensors misaligned or beam blockedCraftsman opener code 1-5: travel module (Craftsman openers are built by Chamberlain Group; a generic Chamberlain Group part or opener image is shown)1-5Travel module or RPM sensor fault

Sources

Part numbers are OEM references; confirm fit by your model number before ordering. Meanings compiled from manufacturer and parts-retailer documentation; see sources below. Unplug the appliance before opening it.