- Appliances
- Dishwashers
OC
Samsung OC on a dishwasher: water level higher than expected
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Medium
Quick answer
On a Samsung dishwasher, OC (or 0C) is an over-level water error, often linked to drainage problems. Switch it off and check the sink drain, the hose, the filter and the sump, as for a drain fault.
Safety first
Stop and check this first
- If you see water outside the tub or on the floor with OC, cut power at the breaker before drying it and close the dishwasher water valve.
Safe checks you can perform
- Sink drain
- Drain hose
- Filter and sump
Leave these tasks to a qualified professional
- Do not attempt this professional task: Filling and level detection check
- Do not attempt this professional task: Monitored test cycle
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Filling and level detection check
What they doWith the unit disconnected, the technician checks that the inlet valve shuts properly and that level detection reads correctly against Samsung specification.
They must show youthe valve check and the level reading check.
In writingwhat was checked, the result and the reference of any replaced part.
Monitored test cycle
What they doThe technician runs a full cycle and checks the water level and that OC does not return.
They must show youa full cycle with no code.
In writingthe test, the result and the date.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Sink drain
- Who:
- you, no tools.
- How:
- run water in the sink for 30 seconds and check the disposal if you have one.
- Result that matters:
- the sink drains normally.
- If it does not drain:
- the problem is the house plumbing; call a plumber.
- If it drains well:
- check the hose.
- Evidence to keep:
- note how the sink drains.
Evidence: Steps to take if your Samsung dishwasher is not draining
Drain hose
- Who:
- you, no tools.
- How:
- with the unit off, follow the hose under the sink: it must form a high loop or go to an air gap and not be twisted or kinked.
- Result that matters:
- a straight hose with a high loop or air gap.
- If it had no high loop or was kinked and OC does not return once fixed:
- that was the cause.
- If it is correctly placed:
- clean the filter and sump.
- Evidence to keep:
- a photo of the hose.
Evidence: Common Samsung dishwasher error codes and their meaning · Steps to take if your Samsung dishwasher is not draining
Filter and sump
- Who:
- you, following the manual.
- How:
- switch the unit off and clean the filter, drain and sump of the tub, taking care with sharp objects.
- Result that matters:
- a clean filter and a cycle without OC.
- If it had debris and the cycle ends without OC:
- that was the cause.
- If it was clean and OC persists:
- contact Samsung service.
- Evidence to keep:
- a photo of the filter before and after.
Evidence: Common Samsung dishwasher error codes and their meaning · Steps to take if your Samsung dishwasher is not draining
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- Samsung
- Product type
- Dishwashers
Known code variants
- 0C
- desbordamiento lavavajillas Samsung
- error OC lavavajillas Samsung
- Samsung dishwasher OC
- Samsung dishwasher overflow OC
- Samsung OC dishwasher code
- Samsung OC lavavajillas
What it means
Samsung defines OC and 0C on a dishwasher as an over-level error: the unit detects more water than expected, and Samsung Canada notes it is often linked to drainage problems. So it asks for the same checks as for not draining: sink connection and disposal, a hose with a high loop or air gap and no kinks, the sink by running water for 30 seconds, filter and sump. The code does not name a part: if the drain is fine and OC persists, filling and level detection are for the service technician.
Warnings and stop conditions
- Mediumeditorial warning
If you see water outside the tub or on the floor with OC, cut power at the breaker before drying it and close the dishwasher water valve.
Evidence: Common Samsung dishwasher error codes and their meaning
Symptoms and causes
Probable causes · in order
- Slow or blocked drainCommon
Samsung Canada links OC mainly to drainage. Told apart because the sink drains slowly or the filter has debris.
Evidence: Common Samsung dishwasher error codes and their meaning · Steps to take if your Samsung dishwasher is not draining
- Hose without a high loopPossible
Without a high loop or air gap, water can flow back into the tub. Visible along the hose under the sink.
Evidence: Steps to take if your Samsung dishwasher is not draining
- Filling or level detectionPossible
Only if the drain is fine and OC persists. The code does not separate inlet valve and level reading: the technician does.
Evidence: Samsung USA dishwasher error codes · Common Samsung dishwasher error codes and their meaning
Virtual technician
Does OC still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Samsung USA dishwasher error codes
Samsung · 2026 · official_doc
- 2
Common Samsung dishwasher error codes and their meaning
Samsung · 2026 · official_doc
- 3
Steps to take if your Samsung dishwasher is not draining
Samsung · 2026 · official_doc
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