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LG Washing Machine Error Code bE

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: June 10, 2026
✓ Low Severity 🔧 Easy DIY

Button error — control panel key stuck

The most common cause of the bE error on a LG washing machine is button physically stuck from detergent (~55% of cases); start with: check for stuck button.

💰 DIY cost: $0–$150 👨‍🔧 Pro cost: $100–$250 Save $100+ by doing it yourself
LG Washing Machine error code bE on the display panel
How the bE code appears on a LG washing machine display

What Does Error Code bE Mean on a LG Washing Machine?

Button error — control panel key stuck.

The bE code fires when the control board detects a single panel button registering a continuous press longer than the firmware allows during power-up or standby. To prevent an unintended cycle, it locks the keypad and blocks start. Unlike a full UI communication fault, bE points specifically at the button-sensing layer — a mechanically stuck key, moisture bridging a membrane contact, or a shorted keypad trace holding one input active rather than a dead or unresponsive board.

Models affected: LG top-load and front-load washers with membrane-style touch control panels, including models such as the WM3900HWA, WM4000HBA, WM3400CW, WT7300CW, and WT7900HBA
What owners report: Owners commonly report bE appearing after spills or humid laundry-room conditions, and it often clears once the panel is wiped dry and each button is worked loose. A quick unplug-and-clean frequently resolves it before any part replacement is needed.

What Causes Error Code bE?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

  1. 1
    Button physically stuck from detergent 55% of cases
  2. 2
    Membrane keypad failure 30% of cases
  3. 3
    Control board button interface fault 15% of cases

How to Fix LG Washing Machine Error Code bE

🔧 Easy DIY Est. time: 10–20 min
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Check for stuck button

    Press each button and check for sticky feel.

  2. 2

    Clean control panel

    Wipe with dry cloth around all buttons.

  3. 3

    Replace UI board

    If button remains stuck.

    🔩 LG washer UI board ($60–$150)

How to Reset Error Code bE

Unplug 5 minutes. Clear stuck button before restart.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

Full LG washer reset guide → Enter diagnostic mode →

Did this guide fix your appliance?

When to Call a Professional

If UI board replacement doesn't fix bE, main board button interface has failed.

Average professional repair cost for this issue: $100–$250

Same Code on Other Brands

Error code bE appears on these other brands too. See every brand that shows bE →

Samsung logo
Samsung Washing Machine bE
Button error — key stuck or shorted
Samsung logo
Samsung Dryer bE2
Button error — a control-panel key is stuck
Samsung logo
Samsung Dishwasher bE
Button error — a control-panel key is stuck or shorted

Find Replacement Parts

Use these links to find the exact replacement parts for your LG Washing Machine:

🔩
Search PartSelect
LG Washing Machine repair parts
🔧
Search RepairClinic
Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More LG Washing Machine Error Codes

OE Drainage error — water not draining within expected time UE Unbalanced load — cannot complete spin cycle IE Water inlet error — water not filling within expected time LE Motor locked — hall sensor or stator fault dE Door open or door lock failure tCL Tub clean reminder — drum needs cleaning

Frequently Asked Questions

Can I keep using my LG Washing Machine when error bE appears? +
Usually yes — bE is a low-severity control-panel notice that rarely stops the washing machine from working, but clearing the underlying cause prevents it from escalating.
What most commonly causes bE on a LG Washing Machine? +
Across reported LG washing machine repairs, the most frequent is button physically stuck from detergent (55% of cases), membrane keypad failure (30%), then control board button interface fault (15%). Check them in that order before replacing any parts.
bE keeps coming back after a reset — what should I check next? +
A reset only clears the stored bE fault; if it returns, the control-panel problem is still present. Move on to the physical checks — check for stuck button, then clean control panel — since the code will reappear until the root cause is resolved. This is a beginner-friendly job needing only basic hand tools.
How much does it cost to fix LG Washing Machine error bE? +
A DIY repair typically runs $0–$150 in parts, versus $100–$250 for a professional service call, so handling it yourself saves around $100. Expect the work to take about 10–20 minutes.
Which LG Washing Machine models show error bE? +
bE is documented on LG top-load and front-load washers with membrane-style touch control panels, including models such as the WM3900HWA, WM4000HBA, WM3400CW, WT7300CW, and WT7900HBA. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

Content verified against manufacturer service documentation. Last verified: June 10, 2026.

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