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Error code reference

Samsung Washer Error Code SUD

Excessive foaming detected; displayed while foaming is being removed, after which normal cycle proceeds

Samsung codesSamsung washer codes
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What the SUD error code actually means

Your Samsung washer detected too many soap suds inside the drum and is pausing to clear them out before continuing. This is a built-in safety feature, not a breakdown. Once the suds are gone, the washer will finish the cycle on its own.

Diagnostic procedure

The full SUD procedure

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1
First diagnostic step
Reduce detergent amount; wait for automatic foam removal to complete; 'End' is displayed when removal is finished.
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Most common causes of SUD

Ranked by how often they cause this code
  1. 1Too much detergent used
  2. 2Non-HE detergent used in an HE washer
  3. 3Detergent residue buildup inside the drum or dispenser
  4. 4High-sudsing laundry items
  5. 5Clogged or slow-draining drain system

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Questions people ask about SUD

What does SUD mean on a Samsung washer?
SUD means the washer has detected too much foam or suds inside the drum. The machine automatically pauses the cycle and runs a foam-reduction routine to clear the suds. Once the foam is removed, the display shows 'End' and the cycle continues or completes. This is a normal protective operation, not a malfunction.
Is it safe to leave the washer running when SUD is displayed?
Yes, it is safe to leave the washer running during a SUD display. The washer is designed to handle this condition automatically by pausing and clearing the foam before resuming the cycle. You do not need to intervene or power off the machine.
How much does it cost to repair a washer showing SUD?
In most cases, there is no repair cost at all since SUD is caused by excess detergent rather than a broken part. Switching to an HE detergent and adjusting your detergent dosage resolves the issue at no cost. If recurring SUD codes point to a drainage problem or a faulty pressure sensor, professional diagnosis and repair could range from $100 to $250 depending on the part and labor in your area.
How do I fix the SUD code on my Samsung washer?
The most effective fix is to reduce the amount of detergent you use and switch to an HE-rated detergent if you are not already using one. Allow the washer to complete its automatic foam-removal routine without opening the door. If SUD appears repeatedly, run a drum-cleaning cycle to remove detergent residue buildup from inside the machine.
Will resetting the washer clear the SUD code?
Powering off and restarting the washer will clear the display, but it will not remove the foam that caused the code. If you restart without allowing the foam to dissipate, the SUD code is likely to reappear quickly. It is better to let the automatic foam-removal routine finish, which is indicated by the 'End' display.

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