The **LC** display on a Samsung dishwasher points to **model/region dependent: leak / moisture detected; blocked waterwall reflector can also trigger this code**. Treat it as a diagnostic direction rather than a parts order: operating conditions, wiring, sensors, actuators, and control electronics can overlap. Samsung uses overlapping code conventions across model years and regions. This page keeps the appliance context attached to the code so a same-looking string from another product family is not misapplied. The recorded display form is **LC**. Search normalization stores it as **LC** while preserving the characters a homeowner actually sees.
Reviewed by Ethan Mercer · Last reviewed August 17, 2026
Written by
Ethan Mercer Appliance Repair Content SpecialistPublished August 17, 2026Updated August 22, 2026Technically reviewed August 17, 2026
Content status:
Verified
Error codeLC
ApplianceDishwasher
Quick answer
Model/region dependent: Leak / moisture detected; Blocked Waterwall reflector can also trigger this code.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so LC may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
The **LC** display on a Samsung dishwasher points to **model/region dependent: leak / moisture detected; blocked waterwall reflector can also trigger this code**. Treat it as a diagnostic direction rather than a parts order: operating conditions, wiring, sensors, actuators, and control electronics can overlap. Samsung uses overlapping code conventions across model years and regions. This page keeps the appliance context attached to the code so a same-looking string from another product family is not misapplied. The recorded display form is **LC**. Search normalization stores it as **LC** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
While LC is active, the appliance may refuse to start or continue a cycle.
While LC is active, a door, lid, divider, or latch may not be recognized as closed or locked.
One clue that supports the LC diagnosis is that the code can return immediately when the appliance reaches a door-safety check.
When the LC condition is present, lC appears during the dishwasher function associated with leak / moisture detected.
The LC display becomes more meaningful if the cycle can stop, drain, fail to fill/heat, or repeat a stage.
Why it happens
Possible causes
see exact model manual — all/most models — Leak / moisture detected
see exact model manual — Waterwall models — Blocked Waterwall reflector can also trigger this code
Before you call
Safe checks you can make
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
As an external check for LC, open and close the door or lid firmly without forcing it.
As an external check for LC, remove clothing, racks, cookware, packaging, or debris that can interfere with closure.
To rule out an accessible cause, check the visible latch/strike area for obstruction or damage without bypassing the safety interlock.
A safe owner-level check is to if water is trapped in a washer or dishwasher, resolve the drain condition before trying to force the door open.
The next non-invasive check is to record the code before resetting.
A safe owner-level check is to check water supply, drain path/filter, door, detergent/suds, and visible leaks only when relevant.
Important safety warning. Stop use for active leakage near electrical parts, burning smell, or repeated breaker trips. Do not defeat leak or door-safety switches. Do not bypass a safety device merely to see whether LC disappears.
Get help
When to request repair service
Request service if the door closes normally but the code returns, the latch will not release safely, or diagnosis requires testing the interlock, wiring, or control circuit. A repeatable LC event is more useful diagnostically than repeated resets, because it shows when the model/region dependent: leak / moisture detected; blocked waterwall reflector can also trigger this code check is failing.
Book your repair
Seeing this code on your Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
Model/region dependent: Leak / moisture detected; Blocked Waterwall reflector can also trigger this code. Check the model-specific interpretation section below because Samsung publishes more than one verified meaning for this appliance+code key.
Resetting can clear a temporary state, not a persistent issue. If **LC** comes back, preserve the code and move to the safe checks or model-specific service path.
Continue only if the appliance is otherwise safe and the owner-level checks are appropriate. Stop for leakage near electrical parts, smoke, burning odor, arcing, gas concerns, repeated breaker trips, uncontrolled heating, or unsafe temperatures.
No. **LC** tells you which condition or check the control detected. The same display can result from the named component, its wiring, a connector, a supply/airflow/water condition, or the control that reads it.
Official Samsung support itself assigns different meanings to this code in different model/region contexts, so the exact model number matters. This page therefore keeps **Dishwasher LC** separate from same-looking codes used by other Samsung appliance families.
