The **OC** display on a Samsung dishwasher points to **overflow error**. Treat it as a diagnostic direction rather than a parts order: operating conditions, wiring, sensors, actuators, and control electronics can overlap. 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 **OC**. Search normalization stores it as **OC** 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 codeOC
ApplianceDishwasher
Quick answer
Overflow error.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so OC 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 **OC** display on a Samsung dishwasher points to **overflow error**. Treat it as a diagnostic direction rather than a parts order: operating conditions, wiring, sensors, actuators, and control electronics can overlap. 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 **OC**. Search normalization stores it as **OC** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
On affected Samsung dishwasher models, the appliance may enter a protective drain or stop condition.
OC can be accompanied by this pattern: moisture can be present inside a base pan even when no puddle is visible outside.
The OC display becomes more meaningful if the code can return after a fill, drain, defrost, ice-making, or water-dispensing event.
Depending on the exact model, oC appears during the dishwasher function associated with overflow 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/region — cross-region baseline — Overflow 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.
With OC recorded, stop use if water is near electrical parts or leaving the cabinet.
For OC, start by doing this: inspect only visible user-accessible hoses, filters, doors, gaskets, and water connections.
The next non-invasive check is to verify for excess suds where detergent is involved.
Before opening any service area, do not defeat or dry out a leak sensor repeatedly without locating why moisture reached it.
Before opening any service area, record the code before resetting.
The next non-invasive check is to verify water supply, drain path/filter, door, detergent/suds, and visible leaks only when relevant.
Important safety warning. Stop use for active leakage near electrical parts, burning smell, or repeated breaker trips. Do not defeat leak or door-safety switches. If resolving OC would require energized internal access, that is the point to hand the diagnosis to a qualified technician.
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 OC keeps returning, record the stage at which it reappears so the technician can test the overflow 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.
You can try the one reset Samsung documents for the model, but **OC** returning afterward means the condition still exists. Note the operating stage instead of cycling power repeatedly.
Continue only if the appliance is otherwise safe and the owner-level checks are appropriate. Stop for leakage near electrical parts, smoke, burning odor, arcing, gas concerns, repeated breaker trips, uncontrolled heating, or unsafe temperatures.
Not automatically. Samsung error codes are diagnostic indicators, not part numbers. Confirm the circuit around **OC** 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 **Dishwasher OC** separate from same-looking codes used by other Samsung appliance families.