LG Washing Machine SE Error
Applies to front-load washers on LG's list. SE is the sensor member of LG's “temporary error” group, alongside HE and dHE.
What to check first
- Power the washer down and unplug it.
- Let it rest for 10 seconds, restore power and restart the cycle.
- If SE returns, stop — LG directs you to a professional technician; there is no longer home procedure in its documentation.
SE is one of three near-identical entries on LG's front-load list — HE, SE and dHE — each given the same reset and the same ending. SE is the sensor member of the trio: the washer is reporting a sensor error without, in LG's published entry, naming which sensor.
That brevity is the honest content of this page. LG does not publish a home diagnostic that separates one sensor from another for this code, so the page gives you LG's reset, the point at which LG stops, and the information worth collecting for the technician.
Safety first
- Unplug the washer for the reset; sensors and their wiring are not user-serviceable parts.
- Note the stop condition that applies to every code on this site: burning smell, smoke, damaged electrics or a major leak means the machine stays off.
- Stop condition: stop using the machine and unplug it — and do not run it again until it has been checked — if you smell burning, see smoke, find damaged electrics (a scorched plug, a melted or cut cable), or water is leaking in quantity.
Common causes
A temporary sensor fault
LG's framing for this family is a temporary error — a one-off sensor condition that a complete power-down and restart clears.
A sensor fault that survives the reset
A SE that persists is, on LG's entry, a professional technician's diagnosis — the code does not publish which sensor, and guessing between them is not a home procedure.
Step-by-step checks
- Power down fullySwitch the washer off and unplug it — a complete power-down, per LG's procedure.
- Rest 10 seconds, restore, restartWait 10 seconds, restore power and restart the cycle. Run a full cycle, not just a rinse, so the machine exercises its sensors end to end.
- Record the patternNote when SE appears — at fill, at heat, at spin, at random. LG's entry does not ask for this, but it is the first question a technician will ask, and it costs nothing to have the answer ready.
When to call a technician
If SE persists after the reset, LG's front-load list directs you to contact a professional technician. Book it as SE and hand over the pattern you noted — which stage of the cycle triggers it is real diagnostic information.
Model differences that matter
| Machine type | What changes |
|---|---|
| Front load | SE is documented on LG's front-load list: power down, unplug, rest 10 seconds, restore, restart; persistent SE to a professional technician. |
| Other LG sensor codes | Where LG does name the sensor, it uses a different code — PE for the water level sensor, tE for the temperature sensor, vS for the vibration sensor. SE is the unnamed case. |
One-page checklist
- Washer powered down and unplugged
- Rested 10 seconds; power restored; cycle restarted
- Full cycle run; trigger stage noted if SE returned
- SE persists — professional technician booked
Official LG references
Questions people ask about SE
Which sensor is SE about?
LG's published entry does not say — it lists SE simply as a sensor error. Where LG wants a specific sensor named, it uses a specific code (PE, tE, vS). For SE, the diagnosis after a failed reset belongs to the technician.
Why is this page so short?
Because LG's own entry is short: a sensor error, one reset, then a professional technician. Rather than invent a sensor-by-sensor diagnostic LG never published, this page gives you exactly LG's procedure and its stopping point.
SE or 5E — are they the same?
No. 5E-style displays belong to other brands' drain codes (Samsung's 5C/5E family). On an LG front loader, SE is the sensor error on this page.