Samsung · Dishwasher Serious

OC — / oC — Overfill

OC means too much water is in the tub — the dishwasher overfilled and drains to protect against a leak.

Keep using it?
Limited use only
DIY difficulty
Moderate
Typical cost
$25-55
Verified against
samsung.com ↗

The fix

Water inlet valve

Overflow / too much water

$25-55 moderate difficulty 75 min Tools: screwdriver, pliers, towels

Diagnose first: Inlet valve stuck open is the usual cause. Verify float in tub moves freely first.

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Didn't resolve it? Next suspect: Float switch assembly ($15-35)

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How to fix it

  1. Turn off the under-sink water supply.
  2. Test the inlet valve; replace if it will not close.
  3. Check the float and level sensor.

Why it happens

Typical signs: Dishwasher drains repeatedly · Too much water in the tub · OC on the display

  • Inlet valve stuck open A valve that keeps adding water. Most common.
  • Faulty level sensor / float A bad sensor lets it overfill.

More Samsung dishwasher codes

1C 1C — Low water level / fails to start 1E 1E / IE — Filter clogged / heater fault 3C 3C Error — Wash Pump Failure 3E 3E — Hot water supply too hot 4C 4C / 4E — Water Supply Error 4C5 4C5 / 4E5 — Fill timeout with dry tub

All Samsung codes → All dishwasher codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: samsung.com.