Editorial & technical review
- Written by ApplianceWorth Editorial Team
- Technically reviewed by Victor — appliance technician
- Last reviewed 2026-07-01
- Applies to Samsung washers
- Confidence medium
- Also displayed as SD, SUD
- Sources Manufacturer service documentation and field-repair experience · Methodology · Report a correction
What this code means
The washer detected too much foam during washing or rinsing. It may pause, add rinses or extend the cycle while trying to clear the detergent.
Most likely causes
- Too much detergent was used
- Non-HE detergent was used in a high-efficiency washer
- Soft water or a small load requires less detergent
- Detergent residue has accumulated in the tub or pressure system
Safe checks for the owner
- Let the washer complete its suds-reduction routine if it is draining normally and not leaking.
- Run an empty rinse or self-clean cycle without adding detergent.
- Use HE detergent and reduce the dose, especially with soft water and small loads.
Estimated U.S. repair cost
$120–$220, depending on model, access, parts availability and local labor.