SUd, 5UD, Sd, and similar displays indicate oversudsing. Samsung says the washer pauses to let foam dissipate and normally resumes on its own.
What SUd / 5UD means
SUd, 5UD, Sd, and similar displays indicate oversudsing. Samsung says the washer pauses to let foam dissipate and normally resumes on its own.
What you may notice
- The cycle pauses with foam visible
- Rinse time increases
- The display flashes SUd or Sd
- Clothes finish wet or soapy
Most likely causes
- 01Too much detergent
- 02Non-HE detergent in an HE washer
- 03Detergent concentration was misread
- 04Residue has accumulated in the tub
- 05A drain restriction prevents complete rinsing
Safe checks, in order
Start with the simplest non-invasive check. Stop as soon as the error clears; repeated resets can hide a condition without correcting it.
Let the washer finish
Do not add anything. The washer may pause and add rinses while the bubbles collapse.
Review the detergent label
Use HE detergent where required and measure for the actual load, concentration, and water hardness.
Run an empty rinse
After the load is removed, run an empty rinse without detergent if residue remains.
Check drainage if it repeats
A slow drain can prolong a suds problem. Inspect the hose and accessible filter.
Know where to stop
Never add a household de-foamer or mix cleaners in the washer. Use only products and cleaning cycles approved in the model manual.
When to call a technician or support
Service is rarely required for one SUd event. Seek help if the code appears with no detergent or after drainage has been verified.
When you call, have the exact product or vehicle model, model year where relevant, the complete code or symbol, and when it appeared.
Where this information came from
We use the manufacturer's current published guidance as the starting point, then organize it into a safer, beginner-friendly sequence.
Samsung Support — washing machine information and error codes Source last checked August 16, 2026. Manufacturer instructions and model manuals take priority over this independent summary.