LG Dishwasher bE Error Code — What It Means
The bE code on an LG dishwasher stands for bubble error. It appears when the machine detects excessive suds or foam inside the tub, which creates a risk of leakage and triggers a protective stop. This is a suds detection fault, not a drain blockage, motor problem, or sensor failure. LG ties this code directly to detergent issues: using regular handwash soap, liquid dish soap instead of dishwasher-specific detergent, or dosing too much detergent. Eco-friendly type 1 detergents can also generate excess foam. Residual suds left in the tub from a previous wash can cause the code to reappear sporadically until all foam is cleared.
Common Causes
- Regular handwash or liquid dish soap used Using liquid dishwashing detergent meant for hand-washing dishes instead of a dedicated dishwasher detergent generates heavy foam and triggers the bE code.
- Too much dishwasher detergent added Overdosing any detergent, even a dishwasher-safe type, can produce excessive bubbles and trip the bubble sensor.
- Eco-friendly type 1 detergent creating excess suds Some eco-friendly or low-phosphate formulas are prone to high foam levels, which LG identifies as a common bE trigger.
- Residual foam left in the tub from prior cycle Suds that remain after a heavily soaped wash can linger in the machine and cause the code to recur on subsequent cycles.
Step-by-Step Fix
- {‘step’: ‘Verify the bE code on the display and open the door to inspect the tub for visible foam or suds.’}
- {‘step’: ‘Check what detergent was used by asking the customer or inspecting the dispenser area for residue that looks like hand soap or excessive gel.’}
- {‘step’: ‘Run a no-detergent test cycle by emptying the dishwasher completely and starting a rinse or normal cycle without adding any detergent to confirm foam is the cause.’}
- {‘step’: ‘Reduce existing suds by setting the rinse aid dispenser to L0, placing 200 to 300 ml of milk in a bowl on the upper rack, and running a Normal cycle to help break down foam.’}
- {‘step’: ‘Repeat the milk rinse if needed until no foam appears in the tub or on the door seal during a test cycle.’}
- {‘step’: “Switch to powder or solid dishwasher detergent and advise the customer to reduce the dose to the manufacturer’s recommended amount for their water hardness.”}
- {‘step’: ‘Run a final test cycle with the correct detergent type and dose to confirm the bE code does not return and the machine completes normally.’}
Parts Often Needed
| Part | Notes |
|---|---|
| Powder dishwasher detergent | Amazon | LG recommends powder or solid-type dishwasher detergent to reduce foam risk and prevent bE recurrence. |
When to Call a Pro
Call a professional if the bE code persists after you have eliminated all foam, confirmed you are using only powder dishwasher detergent in the correct dose, and run multiple rinse cycles to clear residue. A technician can inspect the control system and confirm whether the foam-detection logic is functioning correctly or whether an unrelated fault is mimicking a bubble error. If the machine shows other symptoms such as failure to drain, unusual noises, or water leaks alongside bE, professional diagnosis is needed to rule out mechanical or electrical issues outside the scope of detergent correction.