Home Fault Codes

LG Washer Error Code Sud: Meaning and Fix

Sud
How Sud appears on a LG washer display.
Generic LG washer image (main control board); the Sud code is not tied to one single part
Sears PartsDirect product image (LG OEM part EBR79909506)

Also shown as: SUD

Reading the washer display

On a washer the code appears on the digital display or as a pattern of flashing cycle lights. Note it exactly, including any dashes or sub-codes, then unplug the washer for five minutes and run a short drain cycle to see whether it returns. LG codes are short letter pairs; a capital O differs from a zero.

LG appliances show short alphabetic codes (OE, IE, UE on washers, Er plus letters on refrigerators) and, on ThinQ models, a Smart Diagnosis option. LG also builds many Kenmore Elite units. The codes apply to model numbers such as LDF7774ST, LDT5678SS and DLEX3900B; check the label on your unit to confirm yours.

What causes Sud

How to fix it

  1. Let the suds-removal cycle finish.
  2. Use only HE detergent in the amount on the label.
  3. Cut the dose further if your water is soft.
  4. Run a Tub Clean cycle to clear residue.
  5. Check that the liquid cup is in place in the main wash compartment.

Questions

Why is my cycle taking hours?

The washer pauses to settle the suds before continuing.

Do pods cause suds?

Only if too many are used.

Does Sud mean a fault?

No, it is a protection feature.

Other LG washer codes

Drain pump for an LG washer, a part commonly involved in the OE codeOEDrain errorWater inlet valve for an LG washer, a part commonly involved in the IE codeIEWater inlet errorGeneric LG washer image (main control board); the UE code is not tied to one single partUEUnbalanced load errorDoor lock assembly for an LG washer, a part commonly involved in the dE codedEDoor not closed errorDoor lock assembly for an LG washer, a part commonly involved in the dE2 codedE2Door closed but not lockedDrive motor for an LG washer, a part commonly involved in the LE codeLELocked motor error

Sources

Part numbers are OEM references; confirm fit by your model number before ordering. Meanings compiled from manufacturer and parts-retailer documentation; see sources below. Unplug the appliance before opening it.

Applies to models including WM3400CW, WM4000HWA, WT7300CV, WM3600HWA, WKEX200HBA.