The **SE** display on a Samsung dishwasher points to **drain error**. Treat it as a diagnostic direction rather than a parts order: operating conditions, wiring, sensors, actuators, and control electronics can overlap. The useful diagnostic value of the code is the subsystem it identifies. A good repair process confirms the symptom, checks the accessible external conditions, and then follows the model-specific circuit only if the display returns. The recorded display form is **SE**. Search normalization stores it as **SE** 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 codeSE
ApplianceDishwasher
Quick answer
Drain error.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so SE 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 **SE** display on a Samsung dishwasher points to **drain error**. Treat it as a diagnostic direction rather than a parts order: operating conditions, wiring, sensors, actuators, and control electronics can overlap. The useful diagnostic value of the code is the subsystem it identifies. A good repair process confirms the symptom, checks the accessible external conditions, and then follows the model-specific circuit only if the display returns. The recorded display form is **SE**. Search normalization stores it as **SE** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
Depending on the exact model, water or condensate may remain where the appliance expects it to be removed.
When the SE condition is present, a cycle can pause, extend, or stop during the drain stage.
One clue that supports the SE diagnosis is that a pump may run longer than normal or sound different while the code is active.
On affected Samsung dishwasher models, sE appears during the dishwasher function associated with drain error.
Depending on the exact model, the cycle can stop, drain, fail to fill/heat, or repeat a stage.
Why it happens
Possible causes
varies by model — official regional/current support — Drain error
Before you call
Safe checks you can make
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
Before opening any service area, check and clean only the user-accessible filter or drain area described in the model manual.
A safe owner-level check is to verify the external drain hose for kinks, freezing, crushing, or an incorrect installation height.
To rule out an accessible cause, verify the household standpipe, sink, disposal connection, or condensate path is not restricted.
With SE recorded, record whether the pump runs and whether fluid actually leaves the appliance.
Before opening any service area, record the code before resetting.
Before requesting service for SE, verify water supply, drain path/filter, door, detergent/suds, and visible leaks only when relevant.
Important safety warning. Safety takes priority over clearing SE. Stop use for active leakage near electrical parts, burning smell, or repeated breaker trips. Do not defeat leak or door-safety switches.
Get help
When to request repair service
For SE, the service threshold is straightforward: If the accessible drain path is clear but the code returns, the pump, internal hose, water-level sensing, wiring, or control may need model-specific testing. Bring the exact model number and a photo of the display so the diagnosis stays tied to the documented Samsung code.
Book your repair
Seeing this code on your Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
You can try the one reset Samsung documents for the model, but **SE** returning afterward means the condition still exists. Note the operating stage instead of cycling power repeatedly.
Short owner-accessible checks may be reasonable when the appliance is safe. Persistent **SE**, worsening performance, or any electrical/water/heat hazard is a reason to stop use.
The code alone is not enough to justify a part. **SE** should narrow testing to the affected function; the final cause still has to be verified on the exact model.
The same-looking code can be reused on another Samsung appliance family or reformatted by region/model year. Match the appliance type and exact model before applying a meaning. This page therefore keeps **Dishwasher SE** separate from same-looking codes used by other Samsung appliance families.