Janome error codes: LO, E1–E5, and what they really mean

Reviewed against manufacturer documentation · Last updated 2026-07-03

Janome computerized machines (DC, Skyline, and Memory Craft series among others) use short display messages rather than long code lists. Two patterns cover nearly every case you'll meet: the harmless LO overload message, and E-series codes that typically follow a thread jam.

The LO message: overload protection

LO (sometimes read as “L-zero”) is Janome’s overload lockout, and it is consistent across Janome models. The machine detected the motor working too hard — a jam, a stalled start, or a foot-controller fault — and shut the drive down before anything burned out. To clear it:

1. Switch the machine off and unplug the foot controller.
2. Remove the bobbin cover and check for tangled thread in the bobbin area; clear and clean it.
3. Let the machine sit switched off for about 15 minutes so the protection resets.
4. Power on without the foot controller and press start/stop. If the machine sews, plug the controller back in and test again — if LO instantly returns, the foot controller or its cord is the fault.

E-series codes (E1–E5): the jam-then-fuse pattern

On many computerized Janomes, E-numbered codes appear immediately after a hard jam. Janome service documentation describes a consistent chain of events: thread locks the hook race, the motor strains, and a small thermal fuse on the control board sacrifices itself to protect the electronics. Depending on the model, E1 relates to the zigzag/stepping motor circuit, while E2, E3, and E5 commonly indicate that protective fuse has blown after a jam.

Before assuming the worst, work through this sequence:

1. Unplug the machine.
2. Clear the jam completely. Remove the needle plate and bobbin case, extract all thread from the hook race, and brush out lint. See the jammed machine guide for the full procedure.
3. Check the handwheel turns freely through a full revolution with all thread removed.
4. Set the needle position and restart. Raise the needle to its highest point with the handwheel, then power the machine on and watch the display.
5. If the code persists on a clean, free-turning machine, the thermal fuse (or a motor sensor) has likely gone. That is a soldered board component — a straightforward job for a Janome service center, but not a DIY fix.

Messages on Memory Craft touchscreen models

Larger Memory Craft machines mostly replace bare codes with plain-language messages (“Foot control is disconnected”, hoop and carriage warnings on embroidery models). Treat them literally, and when a numbered code does appear, note it together with your model number before calling Janome support — the same number can mean different things on different generations.