LG Dishwasher Error Code bE3 — What It Means & How to Fix It

What Does This Error Mean?

The bE3 error on an LG dishwasher means the control panel has detected that a button is stuck, held down, or being continuously pressed. LG's dishwasher software monitors all control buttons. If any button sends a continuous signal for too long — usually longer than 30 seconds — the machine throws bE3 to indicate a stuck button condition. This protects against accidental cycle activation from a jammed key. In most cases, something is physically pressing on the control panel or a button has become stuck due to moisture or debris.

Affected Models

LDF5545ST
LDT7808SS
LDP6810SS
LDT5678SS
LDFN4542S
Most LG dishwashers with touch control panels

Common Causes

A physical object leaning against the control panel and pressing a button continuously — such as a cabinet door or cleaning supply
Moisture or food residue has gotten into or under a button and is causing it to stick in the pressed position
The control panel membrane has deformed or developed a bubble, pressing a button zone from the inside
A child has held down a button for an extended period triggering the stuck-key detection
The control board has developed a fault and is misreading a button as continuously pressed even when it is not

How to Fix It

Check if anything is pressing against the control panel. Look at the dishwasher from the side — is a cabinet door, a hanging cloth, or any object resting against the panel? Remove anything that might be touching or pressing the buttons and then see if bE3 clears.

In kitchens with tight layouts, a cabinet door that swings close to the dishwasher panel is a very common hidden cause of bE3.
Press each button on the control panel individually and release it. Feel for any button that feels sticky, does not spring back, or stays slightly depressed after you release it. If you find one, that button is stuck.

On touch-sensitive panels, 'stuck' means the capacitive sensor beneath the panel surface is constantly triggered — you may see a button indicator light staying on.
Clean the control panel with a slightly damp cloth. Make sure the dishwasher is off first. Wipe down the entire panel surface firmly, paying attention to the edges and gaps around each button. If the panel has physical buttons (not touch-sensitive), use a toothpick carefully to clear any debris from around the button edges.

Do not spray water or cleaning products directly onto the panel. Dampen the cloth and wipe — do not soak.
Reset the dishwasher by pressing and holding the Power button for 5 seconds, or by unplugging the machine for 5 minutes. After restoring power, do not touch any buttons for 30 seconds and see if bE3 reappears on its own. If it does not appear until you press something, test each button one at a time to isolate the stuck key.

If bE3 appears immediately after power is restored without touching anything, the control board itself may be the issue — not a physical button.
If one specific button is consistently stuck and cleaning does not fix it, the control panel membrane may need replacement. The membrane is the plastic overlay with button labels that contains the touch sensors or physical button contacts. It is the part you actually touch. Search your model number plus 'control panel membrane' or 'touchpad assembly' to find a replacement.

Panel membrane replacement is a DIY-friendly repair. It typically involves removing the door inner panel and peeling off the old membrane before sticking on the new one.

When to Call a Professional

Most bE3 causes are fixable without a technician. If cleaning the panel and removing obstructions does not work, and a replacement control panel membrane does not fix it, the main control board may be at fault. A replacement control panel membrane costs $30-$80. A control board replacement costs $100-$200 plus labor.

Frequently Asked Questions

What is the difference between bE, bE2, and bE3?

All three bE codes relate to stuck or faulty button conditions on LG dishwashers. bE is the general button error. bE2 typically points to a specific button group or zone. bE3 usually indicates a button has been detected as continuously pressed for an extended time — suggesting a physical stuck-key condition rather than a brief signal glitch. The fixes are similar for all three.

Could a child accidentally cause bE3?

Yes — if a child holds down any button for 30 or more seconds, the dishwasher may interpret this as a stuck button and display bE3. In this case, simply resetting the machine clears the error. If bE3 appears regularly, consider using the Child Lock feature to prevent accidental panel input. Activate Child Lock by pressing and holding the Rinse button for 3 seconds on most LG models.

Is bE3 a sign that my dishwasher is about to break?

Not necessarily. If the cause was a physical obstruction or a stuck button from debris, fixing it means the dishwasher is fine. If bE3 is appearing repeatedly with no obvious cause, it may indicate the control panel or control board is deteriorating. A panel that throws random button errors repeatedly is nearing the end of its life and will likely need replacement within a year or two.