Samsung Washer code **1 OC** is associated with **overflow / excessive water error**. The display identifies the system or condition the control detected, but it does not by itself prove which individual part should be replaced. 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 **1 OC**. Search normalization stores it as **1OC** 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 code1OC
ApplianceWasher
Quick answer
Overflow / excessive water error.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so 1OC 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
Samsung Washer code **1 OC** is associated with **overflow / excessive water error**. The display identifies the system or condition the control detected, but it does not by itself prove which individual part should be replaced. 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 **1 OC**. Search normalization stores it as **1OC** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
When the 1 OC condition is present, the appliance may enter a protective drain or stop condition.
A symptom that fits 1 OC is that moisture can be present inside a base pan even when no puddle is visible outside.
When the 1 OC condition is present, the code can return after a fill, drain, defrost, ice-making, or water-dispensing event.
One clue that supports the 1 OC diagnosis is that 1 OC appears during the washer stage associated with overflow / excessive water error.
One clue that supports the 1 OC diagnosis is that 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 — Overflow / excessive water 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.
A safe owner-level check is to stop use if water is near electrical parts or leaving the cabinet.
Before requesting service for 1 OC, check only visible user-accessible hoses, filters, doors, gaskets, and water connections.
A safe owner-level check is to check for excess suds where detergent is involved.
To rule out an accessible cause, do not defeat or dry out a leak sensor repeatedly without locating why moisture reached it.
To rule out an accessible cause, record the code and the cycle stage where it appears.
As an external check for 1 OC, verify owner-accessible water supply, drain hose/filter, load balance, door, detergent, or power only when relevant.
Important safety warning. Disconnect power and stop use for active leakage near electrical parts, smoke, burning smell, or repeated breaker trips. For 1 OC, stop troubleshooting immediately if the symptom crosses into a safety hazard rather than a normal diagnostic condition.
Get help
When to request repair service
Persistent leak/overflow detection needs the moisture source corrected. Internal leak tracing, valves, sensors, pumps, or wiring may require service. If 1 OC keeps returning, record the stage at which it reappears so the technician can test the overflow / excessive water error path instead of replacing parts by guesswork.
Book your repair
Seeing this code on your Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
Resetting can clear a temporary state, not a persistent issue. If **1 OC** comes back, preserve the code and move to the safe checks or model-specific service path.
That depends on the accompanying symptom. A code with no safety hazard may allow a short diagnostic check, but **1 OC** should not be ignored if performance is deteriorating or the display keeps returning.
No. **1 OC** 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 1 OC** separate from same-looking codes used by other Samsung appliance families.
