Samsung Washer code **LO** is associated with **door / door-lock error**. The display identifies the system or condition the control detected, but it does not by itself prove which individual part should be replaced. 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 **LO**. Search normalization stores it as **LO** while preserving the characters a homeowner actually sees.
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Door / door-lock error.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so LO may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Samsung Washer code **LO** is associated with **door / door-lock error**. The display identifies the system or condition the control detected, but it does not by itself prove which individual part should be replaced. 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 **LO**. Search normalization stores it as **LO** while preserving the characters a homeowner actually sees.
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
Important safety warning. Disconnect power and stop use for active leakage near electrical parts, smoke, burning smell, or repeated breaker trips. If resolving LO would require energized internal access, that is the point to hand the diagnosis to a qualified technician.
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. In a service visit for LO, model-specific testing should follow the door / door-lock error circuit rather than treating the code as proof of one failed part.
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We diagnose Samsung washer fill, drain, spin, balance, door-lock and motor-related issues.
Door / door-lock error.
Resetting can clear a temporary state, not a persistent issue. If **LO** comes back, preserve the code and move to the safe checks or model-specific service path.
Do not keep operating the appliance through a hazardous symptom just to see whether **LO** clears. If there is heat, water, electrical, gas, or food-safety risk, stop and arrange diagnosis.
Treat **LO** as a starting point, not a replacement instruction. Wiring, feedback signals, operating conditions, and electronic controls can mimic a failed component.
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 LO** separate from same-looking codes used by other Samsung appliance families.
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