On the covered LG washer platform, Sud, SUD means too many suds were detected — LG's own condition. LG states the machine adds a suds-reducing cycle that lengthens the cycle by about 2 hours, and stops during spin to help prevent leaking. First, check how much detergent was used against the manufacturer's recommended amount.
Differential
Likely causes of “LG washer code Sud, SUD”, and how to tell them apart
- 1
Too much detergent
What separates it Foam fills the drum and the cycle grows much longer
How to confirm LG says not to add more than the maker's recommended amount and to reduce the detergent until there are no more suds
- 2
Non-HE detergent
What separates it The detergent is not marked HE, which points to non-HE detergent
How to confirm LG says to be sure to use high efficiency (HE) detergent
- 3
Powder detergent put in the liquid cup
What separates it Powder sits in the liquid detergent cup, which points to powder detergent put in the liquid cup
How to confirm LG says powder in the liquid cup will not dispense correctly and the inlet may clog and water may overflow
- 4
Liquid detergent above the Max line
What separates it The detergent was poured past the Max line, which points to liquid detergent above the Max line
How to confirm LG says exceeding the Max line makes the detergent dispense early
Before you touch a setting
Record this first — changing settings destroys the evidence
- The exact characters shown on the display: Sud or SUD
- The detergent type and how much you poured in
- Whether powder was put in the liquid cup
Try in this order
0 of 6 completedWhat to do first
ReversibleCheck how much detergent was used against the manufacturer's recommended amount.
Correct only the documented fault domain
ReversibleReduce the amount of detergent until there is no more sudsing.
Let the suds routine run
ReversibleLG says that when too many suds are detected the washer displays this code and adds a suds-reducing cycle, which adds about 2 hours to the cycle time; if too many suds appear in the spin, the washer stops to prevent leaking.
Use the right amount of HE detergent
ReversibleUse only HE detergent in the maker's recommended amount and reduce it until there are no more suds.
Use each detergent type correctly
ReversibleFor liquid, add detergent to the Max line with the liquid cup in place; for powder, remove the liquid cup; for pods, place one pod directly in the drum before loading, no more than one per load, and never in the dispenser drawer.
Drain the foam if it will not clear
ReversibleThe Wi-Fi table says to let the suds dissipate for several hours, then use the Rinse, Drain and Spin cycle to finish the cycle.
Model-specific
What is true of this model and not of its siblings
- Displayed as
- Sud or SUD.
Stop boundary
When this stops being a self-service repair
- !Unplug the washer if foam leaks from the drawer or door onto the floor or towards the controls
- !Do not add more detergent or a de-foamer to a washer that is already sudsing
Evidence ledger
Sources behind this answer
Where the manufacturer's article stops. The 2 hour figure and the pod rules are LG's own.
Exact questions
Common questions
What does Sud, SUD mean on a LG washer?+
too many suds were detected — LG's own condition. LG states the machine adds a suds-reducing cycle that lengthens the cycle by about 2 hours, and stops during spin to help prevent leaking.
How much longer does the cycle take?+
About 2 hours, according to LG.
Can pods cause suds?+
Use no more than one pod per load, placed in the drum, per LG.