If a Samsung washing machine shows **B2**, the verified Samsung meaning in this research set is **button / control-panel input error**. Use the code to narrow the diagnosis, then confirm the exact model because code scope can change by product generation or region. Samsung uses overlapping code conventions across model years and regions. This page keeps the appliance context attached to the code so a same-looking string from another product family is not misapplied. The recorded display form is **B2**. Search normalization stores it as **B2** 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 codeB2
ApplianceWasher
Quick answer
Button / control-panel input error.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so B2 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
If a Samsung washing machine shows **B2**, the verified Samsung meaning in this research set is **button / control-panel input error**. Use the code to narrow the diagnosis, then confirm the exact model because code scope can change by product generation or region. Samsung uses overlapping code conventions across model years and regions. This page keeps the appliance context attached to the code so a same-looking string from another product family is not misapplied. The recorded display form is **B2**. Search normalization stores it as **B2** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
The B2 display becomes more meaningful if one or more controls can not respond as expected or may appear held down.
When the B2 condition is present, the appliance can beep, cancel, or refuse to start while the input is detected.
Depending on the exact model, the code may return immediately when the control panel self-check runs.
When the B2 condition is present, b2 appears during the washer stage associated with button / control-panel input error.
B2 can be accompanied by this pattern: the cycle can pause, stop, retry, drain, or refuse to advance until the condition is cleared.
Why it happens
Possible causes
varies by model — official regional/current support — Button / control-panel input error
Before you call
Safe checks you can make
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
The next non-invasive check is to make sure no object, moisture, cleaner residue, or protective film is pressing the control.
A safe owner-level check is to dry and clean the exterior control surface without flooding it.
Before opening any service area, try the documented Control Lock/Child Lock procedure if relevant.
A safe owner-level check is to do not open the panel to bypass a stuck key.
For B2, start by doing this: record the code and the cycle stage where it appears.
For B2, start by doing this: check owner-accessible water supply, drain hose/filter, load balance, door, detergent, or power only when relevant.
Important safety warning. Disconnect power and stop use for active leakage near electrical parts, smoke, burning smell, or repeated breaker trips. For B2, stop troubleshooting immediately if the symptom crosses into a safety hazard rather than a normal diagnostic condition.
Get help
When to request repair service
If the owner-accessible checks do not clear B2, If the control is clean and unobstructed but the input code returns, the keypad, harness, or control board may require diagnosis. The repair should confirm the monitored function and its feedback before any board or component is condemned.
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 **B2** display should be treated as diagnostic evidence, not as a reason to keep rebooting the appliance.
Continue only if the appliance is otherwise safe and the owner-level checks are appropriate. Stop for leakage near electrical parts, smoke, burning odor, arcing, gas concerns, repeated breaker trips, uncontrolled heating, or unsafe temperatures.
No. **B2** tells you which condition or check the control detected. The same display can result from the named component, its wiring, a connector, a supply/airflow/water condition, or the control that reads it.
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 **Washer B2** separate from same-looking codes used by other Samsung appliance families.
