Samsung Washer OC — What It Means & How to Fix It
Also shown as OE on some models.
The washer detected more water than the cycle should ever contain — usually an inlet valve that won't fully close or a drain hose installed so it siphons water back in.
What this code means
OC (OE on some models) is an overflow error: the water level climbed past what the control board asked for. Since the machine only opens its valves on command, water arriving uninvited means a valve stuck partially open, a mis-set drain hose siphoning water back, or a level sensor misreading.
Note the difference from 4C — that's water failing to arrive, this is the opposite. On a segment display OC and 0C look identical; both mean this overflow condition.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Inlet valve not closing fully (often debris or scale holding it open) | Common | Partly — confirm, then technician |
| Drain hose too deep in the standpipe, siphoning water back into the tub | Common | Yes — reposition hose |
| Water level sensor misreading | Occasional | No — technician job |
| Heavy suds inflating the apparent water level | Occasional | Yes — less detergent |
What you can try yourself
- Run a Spin/Drain cycle to empty the tub, then turn off both water taps behind the machine.
- Do the stuck-valve test: with the taps back on and the washer powered off completely, wait an hour and check whether water has crept into the drum. Water arriving while off means a valve isn't sealing.
- Check the drain hose: no more than about 15 cm (6 in) into the standpipe, hooked loosely with an air gap, never taped or sealed.
- If suds were involved, run an empty hot cycle without detergent and cut your dose going forward.
- Power-cycle the machine and run a small test load with the taps fully on.
When to call a technician
- Water enters the drum while the machine is off — close the taps and book a repair; the valve needs replacing.
- OC repeats with the drain hose correctly installed and no suds in play, pointing at the valve or sensor.
- Water ever reaches the door seal line or the floor — stop using the machine entirely until repaired.
Typical professional repair cost: Inlet valve replacement runs $100–$200 with labor; a water level sensor $120–$250.
Frequently asked questions
Why does my Samsung washer fill by itself when it's off?
A failing inlet valve. The valve is spring-closed and electrically opened, but grit or scale can hold it cracked open so water seeps through day and night. Close the taps when the machine isn't in use until it's replaced — this is also how drums mysteriously fill overnight.
How does a drain hose cause an overflow error?
If the hose seals tightly into the standpipe or sits too deep, draining water can create a siphon that pulls water backward into the tub after the pump stops. The fix costs nothing: pull the hose back and leave an air gap around it.
Is OC dangerous to ignore?
It's one of the codes to take seriously — the failure mode is water on your floor. The machine's protective drain helps, but a valve that won't close defeats it eventually, especially if a power cut stops the pump.
Related Samsung codes
- Samsung Washer 4C Your Samsung washer isn't getting water — usually a closed tap, kinked fill hose, or clogged inlet screen rather than a broken machine.
- Samsung Washer 5C The washer can't drain — nine times out of ten the culprit is a clogged debris filter or a blocked drain hose, both of which you can clear yourself.
- Samsung Washer UE The load inside the drum is unbalanced, so the washer stopped before spinning at full speed — usually fixed by rearranging the laundry, not by repairs.
- Samsung Washer dC The washer thinks its door is open or not locked — most often a bit of laundry trapped in the door seal or debris in the latch, occasionally a failed door lock.
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