Samsung Washing Machine Error Code SUD

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: June 10, 2026

✓ Low Severity 🔧 Easy DIY Also shown as: 5D, SD

Excessive suds detected

The most common cause of the SUD error on a Samsung washing machine is too much detergent used (~65% of cases); start with: wait for suds to settle.

💰 DIY cost: $0–$10 👨‍🔧 Pro cost: $0–$0

Samsung Washing Machine error code SUD on the display panel — How the SUD code appears on a Samsung washing machine display

What Does Error Code SUD Mean on a Samsung Washing Machine?

Excessive suds detected.

SUD (also shown as 5D or SD) fires when the control board detects excessive foam during wash or spin, typically inferred from an unstable spin ramp-up and sensor readings that indicate the drum cannot reach or hold speed through a cushion of suds. Rather than a mechanical fault, it is a protective pause: the machine holds and often adds rinse water to break down foam before resuming. Unlike drain or spin-error codes, no water is trapped and no hardware has failed.

Models affected: All Samsung HE (High Efficiency) washers, both front-load and top-load, including models such as the WF45T6000AW, WF45R6100AP, WF42H5000AW, WF50BG8300AV, WV60M9900AV, WA50R5400AV, WA45T3200AW, and WA54R7600AV

What owners report: Owners commonly report SUD showing up mid-cycle, especially after switching detergents or overfilling the dispenser, and it often clears on its own if left alone for a while. A frequent quick win is simply using far less HE detergent going forward; some also find a non-HE or overly sudsing detergent to be the culprit.

What Causes Error Code SUD?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

1

Too much detergent used 65% of cases
2

Wrong detergent type — non-HE detergent in HE washer 25% of cases
3

Detergent residue buildup from previous overuse 10% of cases

How to Fix Samsung Washing Machine Error Code SUD

🔧 Easy DIY Est. time: 10–20 min

⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.

1

Wait for suds to settle

The washer will automatically continue once suds reduce enough. This may take 15–30 minutes. Do not turn off the washer.
2

Run a Rinse+Spin cycle

If the cycle doesn't continue within 30 minutes, run a Rinse+Spin cycle to clear the suds.
3

Reduce detergent going forward

For HE (High Efficiency) washers, use HE-labeled detergent only, and use significantly less than the measuring line suggests — 1–2 tablespoons for a normal load.
4

Clean the drum (if recurrent)

Run a drum clean cycle monthly to remove detergent residue buildup.

🔩 Affresh washer cleaner tablet

How to Reset Error Code SUD

SUD clears automatically once foam reduces. No manual reset needed. If you want to speed up the process, run a Rinse+Spin cycle.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

Full Samsung washer reset guide → Enter diagnostic mode →

Did this guide fix your appliance?

When to Call a Professional

SUD is not a fault requiring professional service. If it occurs every cycle despite using minimal HE detergent, the detergent dispenser drawer may need cleaning.

Average professional repair cost for this issue: $0–$0

Same Code on Other Brands

Error code SUD appears on these other brands too. See every brand that shows SUD →

LG Washing Machine SUD

Excess suds detected — too much foam in the tub

Whirlpool Washing Machine SUD

Excessive suds detected — too much detergent

KitchenAid Washing Machine 5D

Excessive suds detected

Maytag Washing Machine SUD

Excessive suds — too much detergent

Find Replacement Parts

Use these links to find the exact replacement parts for your Samsung Washing Machine:

🔩

Search PartSelect

Samsung Washing Machine repair parts

🔧

Search RepairClinic

Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More Samsung Washing Machine Error Codes

4C Water supply not detected UE Unbalanced load detected OE Drain failure — water not draining LE Motor locked — drum cannot rotate DE Door not properly closed or door lock failure HE Water heater error — water not heating to target temperature

Frequently Asked Questions

Can I keep using my Samsung Washing Machine when error SUD appears? +

Usually yes — SUD is a low-severity detergent notice that rarely stops the washing machine from working, but clearing the underlying cause prevents it from escalating.

What most commonly causes SUD on a Samsung Washing Machine? +

Across reported Samsung washing machine repairs, the most frequent is too much detergent used (65% of cases), wrong detergent type — non-HE detergent in HE washer (25%), then detergent residue buildup from previous overuse (10%). Check them in that order before replacing any parts.

SUD keeps coming back after a reset — what should I check next? +

A reset only clears the stored SUD fault; if it returns, the detergent problem is still present. Move on to the physical checks — wait for suds to settle, then run a Rinse+Spin cycle — since the code will reappear until the root cause is resolved. This is a beginner-friendly job needing only basic hand tools.

How much does it cost to fix Samsung Washing Machine error SUD? +

A DIY repair typically runs $0–$10 in parts, versus $0–$0 for a professional service call. Expect the work to take about 10–20 minutes.

Which Samsung Washing Machine models show error SUD? +

SUD is documented on All Samsung HE (High Efficiency) washers, both front-load and top-load, including models such as the WF45T6000AW, WF45R6100AP, WF42H5000AW, WF50BG8300AV, WV60M9900AV, WA50R5400AV, WA45T3200AW, and WA54R7600AV. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

• Samsung Support — Error Codes — official manufacturer documentation
• Our editorial & verification policy

Content verified against manufacturer service documentation. Last verified: June 10, 2026.

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