SUD or Sd means excessive foam is interfering with normal draining and spinning. The washer may pause and add extra rinses several times.
What SUD / Sd means
SUD or Sd means excessive foam is interfering with normal draining and spinning. The washer may pause and add extra rinses several times.
What you may notice
- Cycle time becomes much longer
- The washer pauses during rinse
- Foam is visible
- The final load is wet or poorly rinsed
Most likely causes
- 01Too much detergent
- 02Non-HE detergent
- 03An oversized detergent pod
- 04Thickened splashless bleach
- 05A restricted drain hose
Safe checks, in order
Start with the simplest non-invasive check. Stop as soon as the error clears; repeated resets can hide a condition without correcting it.
Allow extra rinses
The pauses are part of the washer's attempt to remove foam.
Use the correct detergent
Choose HE detergent and measure for the load.
Rinse again if needed
Run Rinse/Spin without adding detergent.
Check the drain path
Straighten the hose and inspect any accessible filter.
Know where to stop
Do not mix bleach, vinegar, ammonia, or other cleaners to remove foam.
When to call a technician or support
Seek service when Sd appears without detergent or repeats after correct dosing and a verified clear drain path.
When you call, have the exact product or vehicle model, model year where relevant, the complete code or symbol, and when it appeared.
Where this information came from
We use the manufacturer's current published guidance as the starting point, then organize it into a safer, beginner-friendly sequence.
Whirlpool Product Help — SUD or Sd Source last checked August 16, 2026. Manufacturer instructions and model manuals take priority over this independent summary.