If a Samsung washing machine shows **EP**, the verified Samsung meaning in this research set is **program selector / mode regulator mismatch or issue**. Use the code to narrow the diagnosis, then confirm the exact model because code scope can change by product generation or region. The exact stage when the code appears can be as important as the characters themselves. Note whether it happens at startup, during fill, heating, cooling, draining, spinning, drying, or after a power event. The recorded display form is **EP**. Search normalization stores it as **EP** 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 codeEP
ApplianceWasher
Quick answer
Program selector / mode regulator mismatch or issue.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so EP 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
If a Samsung washing machine shows **EP**, the verified Samsung meaning in this research set is **program selector / mode regulator mismatch or issue**. Use the code to narrow the diagnosis, then confirm the exact model because code scope can change by product generation or region. The exact stage when the code appears can be as important as the characters themselves. Note whether it happens at startup, during fill, heating, cooling, draining, spinning, drying, or after a power event. The recorded display form is **EP**. Search normalization stores it as **EP** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
On affected Samsung washing machine models, the appliance can stop or limit the affected function when the code is detected.
One clue that supports the EP diagnosis is that the same code may return at a repeatable stage of operation.
EP can be accompanied by this pattern: other symptoms depend on the model and the subsystem named by Samsung.
When the EP condition is present, eP appears during the washer stage associated with program selector / mode regulator mismatch or issue.
The EP display becomes more meaningful if the cycle may pause, stop, retry, drain, or refuse to advance until the condition is cleared.
Why it happens
Possible causes
varies by model — official regional/current support — Program selector / mode regulator mismatch or issue
Before you call
Safe checks you can make
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
With EP recorded, record the exact code, model number, and operating stage before resetting power.
To rule out an accessible cause, complete only the owner-accessible checks described in the model manual.
For EP, start by doing this: do not replace parts solely from a display code when wiring, conditions, or control feedback can create the same result.
A safe owner-level check is to record the code and the cycle stage where it appears.
The next non-invasive check is to verify owner-accessible water supply, drain hose/filter, load balance, door, detergent, or power only when relevant.
Before requesting service for EP, power-cycle once only where Samsung's guidance recommends it; if the same code returns, move to model-specific diagnosis.
Important safety warning. Disconnect power and stop use for active leakage near electrical parts, smoke, burning smell, or repeated breaker trips. Do not bypass a safety device merely to see whether EP disappears.
Get help
When to request repair service
For EP, the service threshold is straightforward: If the code returns after the documented basic checks, request model-specific diagnosis of the affected subsystem. 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.
Program selector / mode regulator mismatch or issue.
One controlled restart is reasonable after correcting an obvious external issue. A recurring **EP** display should be treated as diagnostic evidence, not as a reason to keep rebooting the appliance.
Do not keep operating the appliance through a hazardous symptom just to see whether **EP** clears. If there is heat, water, electrical, gas, or food-safety risk, stop and arrange diagnosis.
Not automatically. Samsung error codes are diagnostic indicators, not part numbers. Confirm the circuit around **EP** before replacing anything.
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 **Washer EP** separate from same-looking codes used by other Samsung appliance families.
