Samsung Dishwasher OC error code

There is more water in the tub than there should be - an over-level water error. The dishwasher will usually start draining on its own when this happens.

Also shown as: OC, 0C, oE, OE

Last updated: October 6, 2026

Quick answer: Samsung dishwasher error code OC: too much water in tub. The most common cause is water inlet valve stuck open. Try this first — let the dishwasher drain itself. If that does not clear it, cut back on detergent. If the code persists, call a qualified technician.

What causes the OC error?

  • Water inlet valve stuck open
  • Excess detergent creating suds that fool the level sensor
  • Blocked drain slowing water exit
  • Faulty water level sensor
  • Failed main control board

How to fix Samsung OC — step by step

Work through these in order, from simplest and safest first. Stop as soon as the code clears.

  1. Let the dishwasher drain itself
    Give the machine a few minutes - on OC it normally runs the drain pump automatically until the level drops. Do not open the door mid-drain.
  2. Cut back on detergent
    Too much detergent or the wrong type creates suds that trigger false over-level readings. Use the recommended amount of automatic-dishwasher detergent only.
  3. Check the drain path
    Make sure the drain hose is not kinked and the sink drain or disposal is clear. Slow draining lets the level climb during fill.
  4. Watch for continuous filling
    If water keeps rising even with the power off, the inlet valve is stuck open - turn off the under-sink supply valve and call a technician.
    Safety warning: A valve stuck open can flood the kitchen - shut the supply valve promptly.
Related guide: Dishwasher troubleshooting — fix common problems, with links to every dishwasher error code we cover.

When to call a technician

Stop and call a qualified technician if any of these apply:
  • Water keeps filling with the power off (stuck inlet valve)
  • OC returns on every cycle with correct detergent
  • The inlet valve or level sensor needs replacement
  • The control board is overfilling the tub

Frequently asked questions

Is OC dangerous?

It can be if the inlet valve is stuck - water keeps coming. If the level keeps rising with the power off, shut the supply valve and call for service.

Can suds really cause OC?

Yes. Excess foam confuses the level sensor into thinking the tub is overfull. This is why dishwasher detergent amount matters.

What is the difference between OC and LC?

OC means too much water inside the tub. LC means moisture detected in the base pan under the tub (a leak). Different sensors, different problems.

Sources

Every meaning and fix above was checked against official manufacturer documentation:

FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.

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