LG bE fault codewhat it means and how to fix it
Oversudsing, and LG name the culprit outright: liquid dish soap. Their published remedy involves a bowl of milk, which sounds like folklore but is in the manual.
Before you start
What bE means
LG do not hedge on what causes bE. Their manual gives it as oversudsing caused by improper detergent, such as liquid dish soap, which is refreshingly direct — most manufacturers describe the symptom and leave you to work out that somebody put washing-up liquid in the machine. LG’s online guide spells out the name: bE stands for bubble error, and the machine shows it to stop foam turning into a leak.
The manual adds a second cause that is easy to miss, a machine that has not been levelled. LG’s remedy is where it gets interesting, because alongside the expected instruction not to use hand dishwashing liquids, they publish a method for killing the suds that sounds like something a neighbour would tell you: a bowl of milk on the upper rack and a cycle with no detergent. It is in the owner’s manual, not on a forum — the manual says 100 to 200 ml in a shallow bowl on the upper rack and the Auto cycle; LG UK’s current online article says 200 to 300 ml in the centre of the upper rack, rinse aid turned down to L0 first, and the Normal cycle with High Temp and Extra Rinse added. LG do not explain the chemistry, and we will not invent one, but it is their published fix and it saves running four or five empty cycles. LG also give you a test: run the machine empty with no detergent, and if suds and bE come back, the detergent was the problem — and if bE shows with no suds at all, book a service.
The reason LG bother publishing a remedy at all is that suds are more than a nuisance in a dishwasher. Foam cushions the spray so nothing gets clean, and it starves the circulation pump, which starts pulling air. In a bad case it climbs over the tub and reaches the base of the machine, at which point you are dealing with a leak code instead of a free fix.
What causes it
| Cause | What is actually happening | How likely |
|---|---|---|
| Washing-up liquid put in the machine | LG name it directly as improper detergent such as liquid dish soap. This is the cause the overwhelming majority of the time. | Common |
| Soapy items loaded without rinsing | A pan that has been soaking in hot suds and goes straight in carries enough detergent to foam an entire cycle. Nothing went in the dispenser, so the cause is easy to miss. | Common |
| Too much detergent, especially liquid | LG’s online guide names too much detergent as a cause and says liquid dishwasher detergent is the easy one to overdose — use only a small amount, or switch to powder or tablets. Possible with powder too in a soft water area. | Occasional |
| Machine not level | The manual’s second cause for bE: "Failure to level appliance. Make sure that the appliance is properly leveled." A tilted tub lets foam reach the sensor that would otherwise stay clear of it. | Occasional |
| Rinse aid dispenser leaking | A dispenser releasing continuously rather than at the right point produces foam that keeps coming back after you have cleared it. LG have you turn rinse aid down to L0 for the milk cycle, which points at the same thing. | Occasional |
What to try yourself
Open the door and look for visible foam. If it is there, the cause is confirmed and no part has failed. If bE is showing with no foam at all, LG say to request service rather than carry on.
Scoop out what foam you can reach, then run LG’s test: empty machine, no detergent, run a cycle. If suds and bE come back, the detergent is the cause.
Use LG’s milk method: turn the rinse aid setting down to L0, leave the dispenser empty, put a bowl with 200 to 300 ml of milk in the centre of the upper rack, and run the Normal cycle with High Temp and Extra Rinse (the manual’s older wording is 100 to 200 ml in a shallow bowl on the upper rack, Auto cycle). Repeat if suds remain, then set the rinse aid level back to where it was.
Check the detergent dispenser for washing-up liquid residue and check the rinse aid dispenser is not overfilled or weeping. Check the machine is level, which the manual lists as a cause in its own right.
Rinse anything that has been soaking in soapy water before it goes in the machine in future. LG’s wording: if you prewash with dish soap, rinse it off completely before loading.
Get a qualified appliance engineer to look at your LG bE
We do not pass enquiries to a repair firm, so there is no form here. When you book a qualified appliance engineer, tell them the make, the model and the exact code or message on the display, and ask whether they carry parts for this make — that is what turns one visit into a repair rather than a quote.
What it costs to fix
Typical repair cost
£0
Time on site
45 minutes
Nothing. Rinse cycles and a change of habit. No part is involved.
Typical UK prices including parts and labour, updated September 2026. Your quote may differ.
Own this appliance and had this code? . Nothing is published until a person has read it.
Related LG fault codes
- LEGet it checkedMotor trouble on the Direct Drive motor — and the code where LG’s 10-year warranty claim needs checking carefully before you pay for anything.Related: spray arms and circulation
- OEGet it checkedDrainage problem. LG list this twice — once as a running fault and once as an installation fault — and the second is the one people miss.Related: same brand
- IEGet it checkedWater inlet problem. It is IE with a letter I, not 1E — the washing machine convention does not apply here.Related: same brand
- AEStop — call an engineerLG’s leak and overfill code, shown as AE, E1 or FE depending on the model. The manual says call for service if it recurs; LG’s online guide says unplug it and book. Do the second.Related: same brand
- HEGet it checkedHeater circuit failure. The dishes come out wet and nothing has been properly sanitised, even though the cycle appeared to finish.Related: same brand
Own a LG dishwasher? Save it and its codes come first next time.
Related guides
Common questions about LG bE
Milk in a bowl? Is that a real instruction?
It is in LG’s UK owner’s manual and in their current online bE article as the published remedy for this code, which is why we are repeating it. The bowl goes on the upper rack, not the lower one. LG do not say why it works, and neither will we; it is their fix, it costs a cup of milk, and it beats running empty cycles all afternoon.
Nobody put anything in the dispenser. Where did the foam come from?
Almost always from something loaded still coated in washing-up liquid — a pan left to soak, or a dish rinsed in a sink of suds. The detergent never went near the dispenser, which is exactly why the cause gets overlooked.
Is the machine damaged?
No. bE is the machine noticing conditions it cannot wash in and stopping. What you want to avoid is running full cycle after full cycle while it is still foaming, because badly foaming water can escape the tub and reach the base, and that turns a free problem into an engineer’s visit.
Technical review
Not reviewed by an engineer
No engineer has read this page. Severity follows what the manufacturer publishes, and we would rather tell you that than let a byline imply a sign-off.
Sources and how we verified this
We establish the facts from the sources below and then write the explanation ourselves. We do not copy manufacturer wording and we do not host their manuals.
- Manufacturer technical and service documentation
- Manufacturer support portal
This page has not been reviewed by an engineer, and we would rather tell you that than imply otherwise. The severity rating follows what the manufacturer publishes: where they say isolate the appliance and call someone, so do we.