What does LG Dishwasher Leaking - Causes & Fix mean?

Most LG dishwasher leaks come from a dirty or damaged door gasket. Clean debris from the seal or replace it if torn or deformed.

How do I fix LG Dishwasher Leaking - Causes & Fix?

Work through the step-by-step fix below. Start with the quick reset and the most common cause, then check the specific part this guide points to. Most fixes need only basic hand tools and the right replacement part.

Can I keep using my LG appliance with this error showing?

Usually not. LG appliances show this error when a part or safety circuit is out of range, so running it can stop the cycle or make the problem worse. Diagnose and clear the error before normal use.

What part is most commonly replaced for LG Dishwasher Leaking - Causes & Fix?

The parts that most often fix LG Dishwasher Leaking - Causes & Fix are listed in the parts section of this guide. Match the part to your exact model and serial number before you buy.

Is LG Dishwasher Leaking - Causes & Fix a DIY repair or do I need a technician?

Many fixes are DIY-friendly with basic tools, such as door switches, drain pumps, water inlet valves, thermostats, heating elements, and filters. Sealed-system, refrigerant, gas, or high-voltage work should go to a licensed technician for safety.

LG Dishwasher Leaking - Causes & Fix

LG Dishwasher Leaking — What’s Happening

When your LG dishwasher leaks, it often triggers the AE or E1 fault code on the display. This code means water has pooled in the base pan under the tub and activated the float switch, which shuts down the machine to prevent floor damage. The leak can come from several points: a worn door seal, a blocked spray arm spraying water outside the normal wash pattern, loose water supply fittings, or a dishwasher that is not sitting level.

Before the dishwasher will run again, you need to dry out the base pan completely and fix whatever let water escape the tub. LG’s service documentation points to door gasket issues, spray arm problems, leveling, and water inlet connections as the most common culprits.

Jump to Fix

Most Likely Causes

Door gasket contamination or damage Food residue, grease buildup, tears, or deformation in the rubber door seal prevent a watertight seal and let water escape during the wash cycle.
Spray arm blockage or damage A clogged or cracked spray arm changes the water spray pattern and can shoot water outside the tub or into areas that drain into the base pan.
Dishwasher not level If the unit tilts too far forward or to one side, water pools in unintended areas and can overflow the tub edge or leak past seals.
Loose or leaking water supply connection The 90-degree elbow joint or threaded fitting at the inlet valve under the sink can develop leaks from stripped threads or loose coupling.
Water in the base pan from an internal leak path A crack in a hose, failed pump seal, or leaking inlet valve can drip water directly into the base pan and trip the float switch even if no external leak is visible.
Excess or improper detergent causing over-sudsing Too much detergent or using the wrong type creates excessive foam that can push water past door seals or overflow the tub.

How to Diagnose and Fix

Turn off power to the dishwasher at the circuit breaker or unplug the unit before any inspection or repair work.
Pull the dishwasher out and tip it back slightly to access the base pan, then remove any standing water with towels or a wet-dry vacuum and let the pan dry completely.
Inspect the door gasket for food debris, grease, tears, or gaps in contact with the tub and clean it thoroughly with warm soapy water or replace it if damaged.
Remove each spray arm and check for cracks, clogs in the spray holes, or broken mounting tabs, then clean or replace as needed.
Use a bubble level on the top edge of the open door to confirm the dishwasher is level side-to-side and front-to-back, and adjust the leveling feet if it tilts.
Check the water supply line connection under the sink at the 90-degree elbow and inlet valve threads for moisture, corrosion, or loose fittings and tighten or replace the joint if leaking.
Confirm household water pressure is above 20 PSI using a pressure gauge at a nearby faucet, as low pressure can cause erratic filling and potential leaks.
Run a short test cycle and monitor for new water in the base pan or at external connection points to verify the repair resolved the leak.

Parts You Might Need

Part	Notes
LG dishwasher door gasket	Amazon \| Tub seal that runs around the door opening.
LG dishwasher spray arm	Amazon \| Upper or lower rotating wash arm, model-specific.
90-degree water inlet elbow fitting	Amazon \| Compression or threaded elbow at the supply connection.

If your appliance also shows a code on the display, these match this problem:

When to Call a Pro

If you have dried the base pan and inspected the door gasket, spray arms, leveling, and water supply fittings but the leak persists or you cannot locate the source, call a qualified appliance technician. Internal leaks from a cracked pump housing, failed inlet valve seal, or damaged internal hose require disassembly and parts replacement that are easier to diagnose with pressure testing and experience. A pro can also test the float switch circuit and replace it if the sensor itself has failed, which is less common but will cause the AE or E1 code to reappear even after the pan is dry.