Ever opened your LG dishwasher only to find your dishes still dirty—or worse, smelling funky? It’s not your soap, and your machine isn’t broken. The real culprit? A clogged filter. Most people forget it exists… until grease, food gunk, and mystery slime start causing chaos. But don’t panic.

You’re about to learn precisely how to clean LG dishwasher filter the right way—step by step, without calling a technician. This guide breaks it all down for both beginners and busy homeowners. Let’s get your dishwasher performing like new—cleaner dishes, zero smells, and no stress.

Why Cleaning Your LG Dishwasher Filter Matters

Most people assume that a dishwasher is “self-cleaning.” After all, it sprays hot, soapy water everywhere, right? Unfortunately, that doesn’t apply to your LG dishwasher filter. This humble filter works overtime, trapping food scraps, grease, and debris. When you don’t clean it regularly, your dishwasher can’t do its job correctly, and here’s what can go wrong.

Cleaner Dishes, Every Time

Nothing’s worse than opening your LG dishwasher after a complete cycle only to find gritty film or chunks of food on your “clean” plates. A clogged filter recirculates dirty water through your dishes. By keeping it clean, you ensure that only fresh, filtered water reaches your cups, forks, and dinnerware.

Say Goodbye to Funky Smells

The strange smell you think is coming from your garbage disposal might be originating from the filter in your LG dishwasher. Food bits stuck in the filter begin to decay, leading to mold, unpleasant odors, or even more severe problems. Cleaning your dishwasher monthly helps keep it fresh and makes the air in your kitchen safer.

Avoid LG Error Codes

LG dishwashers are smart, and they know when something’s wrong. If your filter is blocked, you might see:

• OE (Drain Error) – When water won’t drain properly.
• AE (Leak Error) – Sometimes triggered by overflow due to backed-up filters.
• E1 or other drain/pump-related faults.

Regular cleaning can help prevent these annoying error codes and save you from expensive repairs or warranty issues.

It Protects Your Dishwasher’s Lifespan

Dirty filters make your dishwasher work harder, which can cause damage to the motor, pump, or sensors prematurely. It’s like changing the oil in your car. It’s a small thing you can do to save a significant amount of money. Some LG support staff recommend checking the filter every 2 to 4 weeks, depending on use frequency.

Identifying Your LG Dishwasher Filter Type

Before you start cleaning, you need to know which type of LG dishwasher filter your machine has. Different LG models come with varying filter systems—some are removable, while others are semi-permanent.  

Where Is the Filter Located?

In most LG dishwashers, the filter is located at the bottom center of the tub, under the lower spray arm and rack. It typically consists of:

• A mesh cylindrical filter (twist-lock style)
• A coarse filter screen underneath
• A sump area that connects to the drain pump

Open the dishwasher door and remove the bottom rack to see this space more clearly.

Types of LG Dishwasher Filters

Let’s break down what you might see:

1. Twist-and-Lift Removable Filters

These are found in most modern LG models (post-2015). They are easy to clean:

• Look for a circular filter handle under the lower spray arm.
• Turn it counterclockwise to unlock.
• Pull straight up to remove both fine and coarse filters.

These are user-cleanable filters—you should clean them monthly or more often for heavy use.

2. Self-Cleaning (Hybrid) Filters

Some LG dishwashers (especially older ones or specific high-end units) feature semi-self-cleaning hybrid filters. These rely on water pressure and partial grinding action to break down debris. You may still need to:

• Remove the lower spray arm.
• Check the sump area manually for food buildup.

Warning: If your model doesn’t have a twistable handle, don’t force it—you could damage internal parts.

How to Confirm Your Filter Type

• Check your model number (usually found on the door edge).
• Search online or refer to your LG user manual PDF.
• Visit LG’s official support page and input your model.
• Some helpful forums, such as Reddit’s r/Appliances and the LG Community, offer model-specific guides.

Tools and Cleaning Supplies You’ll Need

You don’t need to be a repair technician to clean your LG dishwasher filter, but having the right tools on hand can save time, prevent damage, and make the job go smoothly.

Let’s get you fully equipped before diving in.

Essential Tools and Materials

• Rubber gloves
• Protect your hands from grime and hot water.
• Soft-bristled toothbrush or sponge
• Ideal for scrubbing debris off the mesh without causing damage.
• White vinegar
• Acts as a powerful natural degreaser and deodorizer.
• Mild dish soap
• Breaks down grease without corroding plastic or rubber.
• Toothpicks or a pin
• Helps unclog tiny filter holes and spray arm jets.
• Microfiber cloth
• For drying and wiping the filter, housing, and surrounding areas.
• Warm water
• Safe and effective for rinsing grime from filter parts.

Optional But Helpful Add-Ons

• Baking soda
• Excellent for deodorizing and breaking down stubborn gunk.
• Dishwasher cleaner tablets (like Affresh or Finish)
• Ideal for deeper cleaning during monthly upkeep.
• Small bowl or basin
• Convenient for soaking your filters.
• Tweezers or zip-tie
• Reasonable for pulling out food chunks or glass bits stuck in the sump.

Pro Tips Before You Begin

• Avoid harsh chemicals like bleach unless necessary (they can damage seals and plastic).
• Bypass using steel wool or wire brushes, as they may scratch the filter mesh.
• If your dishwasher has hard water deposits, soak the parts in vinegar for an extended period to dissolve the buildup.

How to Clean LG Dishwasher Filter: Step-by-Step Guide

Most people don’t even realize their dishwasher has a filter—until it starts smelling funky or leaving food stuck to dishes. But don’t worry. This 10-minute cleaning routine will revive your LG dishwasher filter.

Step 1: Turn Off the Power and Water

Before touching anything, always prioritize safety.

• Turn off your dishwasher or switch off the power.
• Shut off the water supply under the sink (optional, but helpful to avoid drips).
• Open the door and ensure the dishwasher is entirely cool and empty.

Tip: Lay a towel under the open door to catch any drips or dropped parts.

Step 2: Remove the Lower Dish Rack

• Pull the bottom rack out and lift it off the track.
• Set it aside so you have full access to the bottom of the tub.

You’ll now be able to see the spray arm and the filter assembly beneath it.

Step 3: Locate and Remove the Filter Assembly

In most LG models (especially newer ones), the filter system is centered at the base of the tub and consists of two parts:

• Cylindrical mesh filter (fine filter)
• Flat coarse filter (surrounding it)

To remove:

1. Grab the handle of the cylindrical filter.
2. Twist counterclockwise (usually a ¼ turn).
3. Lift straight up to remove the cylinder.
4. Pull out the flat mesh filter below it.

Some Reddit users shared that debris buildup can make the filter hard to twist. In this case, pour warm vinegar into the filter area and let it sit for 10 minutes.

Step 4: Rinse Under Warm Water

Now that the filters are out:

• Rinse them under a generous stream of running water to dislodge any loose gunk.
• Use a gentle brush or sponge to clean off grease and food bits.  
• Determined to clean the inside of the dishwasher filter with a sponge or a damp cloth.

Bypass harsh scrubbing—LG suggests using non-abrasive tools to save the fine mesh.

Step 5: Soak in DIY Cleaning Mix

For deep grime or mineral buildup, give your filters a soak:

Mix in a bowl or basin:

• 1 cup warm water
• 1 cup white vinegar
• Optional: 1 tsp baking soda for extra odor control

Let the filters soak for 15–30 minutes.

While you wait, use this time to:

• Clean the spray arms
• Check for debris in the sump (the little well where the filter sits)
• Wipe down the interior walls and door

Step 6: Scrub Gently and Inspect

After soaking:

• Gently scrub all mesh, edges, and corners using your brush or toothbrush.
• Use a toothpick to unclog small holes in the mesh if needed.
• Inspect the filters for cracks or tears—damaged filters should be replaced ASAP.

Step 7: Dry the Filters

Use a clean microfiber cloth to remove moisture from them gently. Moisture can trap more dirt and cause odors, so make sure:

• Filters are completely dry
• The filter housing inside the dishwasher is also wiped down

Step 8: Reinstall the Filter and Test

• Place the flat coarse filter first.
• Insert the cylindrical filter and twist clockwise until it locks snugly in place.
• Slide the lower rack back in.

Now, turn the power and water back on.

To finish:

Operate a short rinse cycle (with no dishes) to test for:

• Leaks
• Unusual noises
• Proper draining

Congratulations—you’ve just given your LG dishwasher filter the spa day it needed.

Most Common Filter-Related Issues and How to Fix Them Quickly

Even if you clean your LG dishwasher filter regularly, it may still experience issues from time to time. Don’t worry—these aren’t major disasters (yet). Below are the most common problems people face, with real-life fixes that work.

1. Filter Won’t Come Out

Problem: You try twisting, pulling, wiggling… and nothing. It feels stuck.

Why It Happens:

• Grease or food buildup is sealing it in place.
• You’re turning it the wrong direction (yes, it happens!).
• Mineral deposits have jammed the locking ring.

Fix:

• Pour warm white vinegar around the base of the filter.
• Let it sit for 15 minutes to break up gunk and limescale.
• Try twisting again, gently counterclockwise. Avoid forcing it.
• If still stuck, use a rubber jar opener for a better grip.

👉 Pro tip: Avoid using pliers—it could damage the plastic ring.

2. The Filter Is Clogged Constantly

Problem: You clean it, but it gets dirty again in just a week.

Why It Happens:

• You’re not pre-scraping food before loading dishes.
• Greasy pots and pans overload the filter.
• You’re using low-quality detergent.

Fix:

• Pre-scrape, not pre-wash—remove chunks without rinsing the entire item.
• Switch to a high-performance detergent, such as Finish or Cascade Platinum.
• Add a monthly vinegar cycle to help break down fats.

Optional: Use dishwasher cleaner tablets every few weeks to help flush the filter zone.

3. Filter Is Damaged or Cracked

Problem: You pull the filter out and notice a hole in the mesh or cracked plastic.

Why It Happens:

• Using harsh tools (like steel brushes).
• Aging plastic.
• Running cycles without a filter locked in place.

Fix:

• Do not reuse a broken filter, as it allows food to enter the pump, potentially damaging your dishwasher.
• Order a new one using your LG model number.
  • Try LGParts.com, Sears PartsDirect, or Amazon.
• Replace both the cylindrical mesh filter and coarse filter if needed.

4. Dishwasher Not Draining Properly

Problem: Water pools at the bottom. The dishwasher stops mid-cycle or flashes error codes.

Why It Happens:

• The clogged filter is blocking the flow to the drain pump.
• Food bits are jammed in the sump area.

Fix:

• Clean the filter thoroughly.
• Remove spray arms and rinse them—food can back up from there.
• Use a flashlight and a long zip tie to check the drain inlet under the filter.
• If needed, run a hot vinegar cycle after physical cleaning.

Still draining slowly? Check the drain hose for clogs.

5. Repeated Error Codes Even After Cleaning

Standard LG Codes Related to Filter Issues:

• OE – Drain Error
• AE – Leak Detected
• IE – Water Inlet Problem

Fix:

• Turn off the dishwasher at the breaker for 5 minutes to reset sensors.
• Re-clean the filter and sump.
• Ensure the filter is seated correctly as required.
• Clear water inlet screen (inside the hose or valve) if code persists.

If errors persist, contact LG support or a technician—ensure the filter is clean before assuming it’s a more significant issue.

6. Dishwasher Suddenly Getting Noisy

Problem: Your quiet dishwasher is now making a buzzing, gurgling, or thumping noise.

Why It Happens:

• Debris has passed through the filter and is interfering with the impeller or chopper blade.
• Spray arms are spinning unevenly due to clogs.

Fix:

• Take away the lower spray arm and inspect the holes in the nozzle for any obstructions.
• Manually rotate the impeller using a pencil (if accessible) to dislodge debris.
• Reinstall everything carefully after cleaning.

Pro tip: If you hear a loud clicking or popping sound, a small item (such as a bone or seed) may be stuck near the sump.

7. Dishwasher Filter Is Missing

Problem: You open your dishwasher and find that the filter is missing. Or you see the mesh, but the inside part is missing.

Fix:

• If it’s missing entirely, order a replacement ASAP.
• Without a filter, your LG dishwasher is pushing debris straight into the motor.
• Use your model number to get the right match.
• Until the filter is replaced, don’t run the dishwasher.

Routine Maintenance Tips to Keep Your LG Dishwasher Filter Cleaner, Longer

After thoroughly cleaning your LG dishwasher filter, your next step is to maintain its cleanliness without having to repeat the entire process every week. These easy, practical maintenance habits will save you time, energy, and future repair costs.

1. Pre-Scrape But Don’t Pre-Wash

It is tempting to rinse every plate before placing it in the dishwasher. But you don’t have to—LG dishwashers are designed to handle light residue. Just scrape off large food chunks into the trash.

• Reduces gunk buildup
• Increases detergent efficiency
• Makes filter cleaning less frequent

2. Run Vinegar Cycles Monthly

Every month, place 1 cup of white vinegar in a dishwasher-safe bowl. Then, place the bowl on the top rack. Run a hot water cycle with no detergent or dishes.

• Loosens limescale and grease
• Neutralizes bad smells
• Keeps internal parts—including the filter housing—clean

3. Avoid Overloading the Racks

When racks are overcrowded, dishes block the spray arms, reducing water flow and pushing more debris into the filter.

• Place larger items at the sides or back
• Ensure water can reach every surface
• Give space between utensils and bowls

4. Use High-Quality Detergents

Cheap pods or low-end powders may not break down food completely. This leads to particles settling in the filter.

• Brands like Cascade Platinum or Finish Quantum are preferred
• Avoid using liquid soap meant for hand washing

5. Clean Spray Arms Every 2 Months

Remove spray arms and rinse them under warm water. Use a toothpick or a pin to remove clogs from the holes.

• Prevents food re-circulation
• Maintains full water pressure
• Reduces filter workload

6. Use Dishwasher Cleaner Tablets

Use brands like Affresh or Glisten every 4–6 weeks to keep your appliances clean and fresh. Drop a tablet into the bottom rack and run a hot wash cycle.

• Deep-cleans the interior, filter, pump, and nozzles
• Great for self-cleaning models

Don’t miss: How to Clean Kenmore Dishwasher Filter Easily (2025 Guide)

FAQs from Reddit and Facebook

Final Thoughts

Now that you know how to clean LG dishwasher filter, you can stop blaming the soap or water pressure when dishes come out dirty. A clogged filter is often the real problem, and it can be fixed in just minutes. If you clean your LG filter monthly, you will eliminate unpleasant odors, extend the lifespan of your dishwasher, and achieve spotless dishes.  

No more oily stains or strange odors. Get into the habit, and your dishwasher will work better every time. It’s an easy job that can have a significant impact, so make sure to do it. A clean filter and a tidy kitchen make a happy home.

Sources

Kenmore Cleaning Guide (also relevant to LG filter style)

LG USA Support – Filter Cleaning

Manuals.plus – LG Filter Q&A

Cascade Study on Filter Efficiency

Reddit CleaningTips LG Dishwasher Thread

IdealHome – Dishwasher Filter Advice