Decode the display, then check
LG describes Sud as an excessive-suds condition. This page uses LG front-load guidance. Match the full display and model before choosing a repair.
Choose the relevant observation
- Foam is visible: compare detergent type and dose with both product and washer instructions.
- Water remains or another warning appears: record that separate condition for diagnosis.
- The warning recurs after correct dosing: obtain model-matched support rather than buying a pressure sensor from the message alone.
Decide what to do next
Follow the owner instructions for the permitted recovery. Keep the result and recurrence history. This message does not independently establish a failed component.
Keep an appliance record for parts or service
Identify the display
Record the detergent, amount used, visible foam and whether water remains. Do not add a guessed antifoam chemical or force an extra water level.
Evidence and limits
LG USA: LG Front Load Washer – Error Code List(New), Sud paragraph. Reviewed October 15, 2026. Front-load family guidance; exact model and revision must confirm application. This is code interpretation and safe routing, not a full repair procedure or a verified part match.