What to check, in order
- Check the detergent
Look for foam in the tub. Samsung UK links this code to the wrong detergent or too many suds, so use dishwasher detergent only, and not too much.
- Clean the filter
Take out the filter at the bottom of the tub and rinse it.
- Check the drain hose
It shouldn't be kinked, and the dishwasher mustn't be sitting on it.
- Check for standing water
There shouldn't be water standing in the base.
- Work through the drain checks
Samsung US handles OC with its drain advice, so check the sink, the air gap or high loop, and the sump as well: see 5C.
When to call an engineer
If water keeps coming in, or the code comes back with the right detergent and a clear drain. Book a Samsung repair.
Quick answers
What does the Samsung OC error code mean?
There's more water in the dishwasher than there should be. You may see puddles at the bottom of the door, hear water still coming in, or find strong foam in the tub.
Can I fix Samsung OC myself?
Easy (about 20 minutes). Start with: check the detergent; clean the filter; check the drain hose. If water keeps coming in, or the code comes back with the right detergent and a clear drain. Book a Samsung repair.
Is Samsung OC worth repairing?
Worth fixing. Usually the detergent or a blockage, which costs nothing. If water keeps coming in by itself, it needs a repair, and it's worth doing soon.
Checked against
- Samsung US: dishwasher error codes
- Samsung UK: what the error codes on your dishwasher mean
- Samsung US: dishwasher not draining
Last reviewed October 2026. Manufacturers update their pages, and your manual is the final word. Spotted a mistake? Email contact@appliance-error-codes.com.