FixByModel
Sud

Whirlpool Sud: Excessive suds detected in the washer

Displayed as Sud, Sd, or 5d, this code means the machine sensed too many suds and is running a suds-reduction routine. Excess foam interferes with proper rinsing, spinning, and draining.

DIY fix

By the FixByModel editorial team · Verified 2026-09 · Researched against manufacturer support & repair references (below)

Most likely causes

  1. Too much detergent
  2. Non-HE detergent in a high-efficiency washer
  3. Highly concentrated detergent dosed incorrectly
  4. Sudsing additives such as thickened no-splash liquid bleach
Before you start — unplug the appliance and turn off the water supply. You'll be working near water and electrical parts, and drained water can be hot. If a step involves the pump, wiring, or opening the cabinet and you're unsure, stop and call a qualified technician.

Step-by-step fix

1Let it runAllow the washer to finish its automatic suds-reduction routine before intervening; it may add time to the cycle.
2Rinse it outRun a Rinse & Spin cycle with no detergent to clear remaining foam.
3Fix the detergentUse only HE detergent and follow the dose for load size and soil level; less is usually better with concentrated formulas.
4Check drainageIf the code keeps returning, inspect and clean the drain hose and pump filter, since suds can restrict draining.

Still showing Sud?

If you’ve worked through every step and Sud keeps returning, an internal part likely needs testing and replacement. That’s a job for a qualified appliance technician, who can measure the suspect part against the service-manual spec before replacing it.

Which models this applies to

Whirlpool washing machines. Top-load and front-load high-efficiency (HE) Whirlpool washers.

FAQ

What does Whirlpool Sud mean?

Excessive suds detected in the washer. Displayed as Sud, Sd, or 5d, this code means the machine sensed too many suds and is running a suds-reduction routine. Excess foam interferes with proper rinsing, spinning, and draining.

What causes Whirlpool Sud?

The most likely cause is too much detergent. Other causes include Non-HE detergent in a high-efficiency washer; Highly concentrated detergent dosed incorrectly; Sudsing additives such as thickened no-splash liquid bleach.

Can I fix Whirlpool Sud myself?

Usually yes. Start by working through the steps above, beginning with: allow the washer to finish its automatic suds-reduction routine before intervening; it may add time to the cycle.