Seeing **Sb** on a Samsung dishwasher narrows the problem to **standby mode**. What you do next depends on whether the code is an issue, a normal status/test message, or a model-dependent interpretation. The exact stage when the code appears can be as important as the characters themselves. Note whether it happens at startup, during fill, heating, cooling, draining, spinning, drying, or after a power event. The recorded display form is **Sb**. Search normalization stores it as **SB** while preserving the characters a homeowner actually sees.
Reviewed by Ethan Mercer · Last reviewed August 17, 2026
Written by
Ethan Mercer Appliance Repair Content SpecialistPublished August 17, 2026Updated August 22, 2026Technically reviewed August 17, 2026
Content status:
Verified
Error codeSB
ApplianceDishwasher
Quick answer
Standby mode.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so SB may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
Seeing **Sb** on a Samsung dishwasher narrows the problem to **standby mode**. What you do next depends on whether the code is an issue, a normal status/test message, or a model-dependent interpretation. The exact stage when the code appears can be as important as the characters themselves. Note whether it happens at startup, during fill, heating, cooling, draining, spinning, drying, or after a power event. The recorded display form is **Sb**. Search normalization stores it as **SB** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
Sb can be accompanied by this pattern: the display appears while the appliance is otherwise able to respond normally.
On affected Samsung dishwasher models, the message can be tied to a mode, test, reminder, setup state, or protective condition rather than a failed part.
While Sb is active, normal operation can resume after the documented mode or condition is cleared.
Depending on the exact model, sb appears on the display while the appliance reports: Standby mode.
Why it happens
Possible causes
varies by model — official regional/current support — Standby mode
Before you call
Safe checks you can make
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
For Sb, start by doing this: confirm the exact display characters and appliance model before treating the message as an issue.
With Sb recorded, check the user-facing setting, mode, door, filter, container, or setup condition named by Samsung for this display.
As an external check for Sb, use the model-specific manual to clear the status; avoid repeated resets if the message reappears unexpectedly.
Before opening any service area, record the code before resetting.
To rule out an accessible cause, check water supply, drain path/filter, door, detergent/suds, and visible leaks only when relevant.
To rule out an accessible cause, if the code returns after the supported owner checks, request model-specific diagnosis.
Important safety warning. When working around a dishwasher that shows Sb, keep the checks external and non-invasive. Stop use for active leakage near electrical parts, burning smell, or repeated breaker trips. Do not defeat leak or door-safety switches.
Get help
When to request repair service
Service is not automatically required. Request diagnosis only if the status cannot be cleared as designed or normal operation does not resume. If Sb keeps returning, record the stage at which it reappears so the technician can test the standby mode path instead of replacing parts by guesswork.
Book your repair
Seeing this code on your Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
One controlled restart is reasonable after correcting an obvious external issue. A recurring **Sb** display should be treated as diagnostic evidence, not as a reason to keep rebooting the appliance.
The display can be normal in the documented context. If **Sb** appears unexpectedly, cannot be cleared, or prevents normal operation, then the issue deserves diagnosis.
The code alone is not enough to justify a part. **Sb** should narrow testing to the affected function; the final cause still has to be verified on the exact model.
The same-looking code can be reused on another Samsung appliance family or reformatted by region/model year. Match the appliance type and exact model before applying a meaning. This page therefore keeps **Dishwasher Sb** separate from same-looking codes used by other Samsung appliance families.