For the Samsung Washer families covered by the source set, **3CP** means **electronic control error**. The first useful step is to preserve the exact characters and model number before power cycling the appliance. A display code is evidence from the control system, not a component test result. That distinction matters because a connector, supply condition, obstruction, or feedback signal can mimic a failed component. The recorded display form is **3CP**. Search normalization stores it as **3CP** 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
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Error code3CP
ApplianceWasher
Quick answer
Electronic control error.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so 3CP 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
For the Samsung Washer families covered by the source set, **3CP** means **electronic control error**. The first useful step is to preserve the exact characters and model number before power cycling the appliance. A display code is evidence from the control system, not a component test result. That distinction matters because a connector, supply condition, obstruction, or feedback signal can mimic a failed component. The recorded display form is **3CP**. Search normalization stores it as **3CP** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
A symptom that fits 3CP is that the appliance can lose communication between control boards, display, inverter, or other electronic modules.
When the 3CP condition is present, controls can become unresponsive, a feature can stop, or the code may appear after power-up.
A symptom that fits 3CP is that intermittent operation can occur if a connection or power condition is unstable.
Depending on the exact model, 3CP appears during the washer stage associated with electronic control error.
3CP can be accompanied by this pattern: the cycle may pause, stop, retry, drain, or refuse to advance until the condition is cleared.
Why it happens
Possible causes
varies by model/region — cross-region baseline — Electronic control 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 requesting service for 3CP, power the appliance off once using the documented method, then restore power and see whether the code reappears.
A safe owner-level check is to record whether the issue followed an outage, update, move, or service event.
Before requesting service for 3CP, do not reseat internal live connectors unless qualified to follow the exact service procedure.
Before opening any service area, record the code and the cycle stage where it appears.
For 3CP, start by doing this: check owner-accessible water supply, drain hose/filter, load balance, door, detergent, or power only when relevant.
Before opening any service area, 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. For 3CP, stop troubleshooting immediately if the symptom crosses into a safety hazard rather than a normal diagnostic condition.
Get help
When to request repair service
For 3CP, the service threshold is straightforward: A returning communication/electronic-control code can require harness, connector, board power-supply, firmware, or module 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.
One controlled restart is reasonable after correcting an obvious external issue. A recurring **3CP** 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 **3CP** clears. If there is heat, water, electrical, gas, or food-safety risk, stop and arrange diagnosis.
No. **3CP** 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.
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 3CP** separate from same-looking codes used by other Samsung appliance families.