LG dishwasher error code

Nothing halts the smooth running of your household chores quite like an unexpected appliance malfunction. Imagine stacking up your LG dishwasher with dirty dishes, expecting a swift cleanup, only to be greeted by an unwelcome error code flashing on the screen. It’s frustrating, we know. If you’ve recently encountered an LG dishwasher error code, you’re in the right place. Let’s dive into what might be causing it and how you can get things back on track.

Common Reasons for LG Dishwasher Error Codes

  1. Faulty Water Inlet Valve: This component controls the flow of water into the dishwasher. If defective, it could either allow too much or too little water, leading to an error code.
  2. Blocked Filters: Over time, the filters can accumulate debris and blockages. This hinders water flow and can lead to issues in the cleaning process.
  3. Defective Door Latch: If the dishwasher door isn’t securely closed, the appliance won’t start. A faulty latch might give a false signal of the door being open.
  4. Faulty Pump or Motor: The pump aids in draining the used water. If malfunctioning, the dishwasher might not drain properly.

How to fix LG Dishwasher error codes?

Fix 1: Check and Replace the Water Inlet Valve

The water inlet valve is a critical component of your LG dishwasher. It governs the flow of water into your machine, ensuring that the dishwasher receives the appropriate amount for efficient cleaning. If this valve is compromised, it can lead to multiple issues, including an LG dishwasher error code. Here’s a detailed guide to checking and, if necessary, replacing the water inlet valve:

LG dishwasher error code

Step 1: Turn Off Power and Water Supply

Safety first! Before you proceed, make sure to:

  • Turn off the dishwasher’s power supply from the main circuit breaker.
  • Shut off the water supply valve, typically located under your sink or behind the dishwasher.

Step 2: Locate the Water Inlet Valve

The water inlet valve is usually located:

  • At the bottom left or right corner of the dishwasher.
  • It might be behind a kick plate or panel, so you may need to remove this first.

Step 3: Examine the Valve

Here’s what to look for:

  • Visible damages, such as cracks or wear.
  • Signs of water leakage around the valve.
  • Any blockages or debris that might hinder the flow of water.

Step 4: Test the Valve

If you have a multimeter, you can test the valve’s solenoid for continuity:

  • Disconnect the valve’s wiring harness.
  • Set the multimeter to the lowest Ohms setting.
  • Touch one probe to each terminal. If you don’t get a reading, the solenoid is faulty.

Step 5: Replace if Necessary

If the valve appears damaged or fails the continuity test:

  • Disconnect the water supply line from the valve.
  • Remove the screws holding the valve to the dishwasher frame.
  • Remove the valve and replace it with a new one.
  • Reattach the water supply line and secure the valve with screws.
  • Replace the kick plate or panel if you had removed it.

Step 6: Turn On Power and Water Supply

Once you’ve inspected or replaced the valve:

  • Turn the water supply back on.
  • Restore the power to the dishwasher from the main circuit breaker.
  • Run a short wash cycle to ensure everything is working properly.

The water inlet valve is a pivotal component for the proper functioning of your LG dishwasher. Ensuring it’s in top shape can prevent many potential issues. Always approach any repair with safety in mind, and when in doubt, don’t hesitate to contact a professional technician.

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Fix 2: Clean the Filters for Unhindered Water Flow

One common culprit behind an LG dishwasher error code is a dirty or clogged filter. Over time, filters can accumulate food particles, soap residue, and other debris, hindering water flow and compromising the appliance’s performance. Let’s walk through the steps to ensure your filters are clean and functioning correctly.

  • Step 1: Remove the Bottom Rack: Start by taking out the bottom rack of your dishwasher to easily access the filter system.
  • Step 2: Identify and Locate the Filter: In most LG dishwashers, the filter is a cylindrical piece at the base. It might consist of a coarse and fine filter. Familiarize yourself with its placement and mechanism.
  • Step 3: Twist and Remove the Filter: Usually, the filter can be removed by giving it a counter-clockwise twist. Gently turn it, and then lift it out of its setting. Some models might have a locking mechanism, so ensure you unlock it before attempting to remove.
  • Step 4: Clean the Filter: Using warm water and a soft brush, gently scrub the filter to remove any debris or buildup. For stubborn residue, a mild dish soap can be handy. Ensure you thoroughly rinse the filter to get rid of any soap before reinstalling.
  • Step 5: Check the Sump Area: With the filter removed, it’s a good time to check the sump area (the place where the filter sits) for any larger debris or obstructions. Remove any noticeable blockages to ensure water can drain effectively.
  • Step 6: Reinstall the Filter: Once cleaned, place the filter back into its slot, ensuring it sits snugly. Twist it clockwise to lock it in place, or if your model has a locking mechanism, make sure it’s securely locked.
  • Step 7: Replace the Bottom Rack and Test: After reinstalling the filter, put the bottom rack back in. Run a quick rinse cycle to ensure water flows smoothly and there are no leaks.
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Maintaining a clean filter is crucial for the optimum performance of your LG dishwasher. A routine check and cleaning, say once a month, can prevent unexpected error codes and ensure that your dishes come out sparkling every time. If, after cleaning, you continue to experience issues, it might be time to consult with a professional or delve deeper into potential causes.

Fix 3: Ensure Proper Door Latch Function

The door latch isn’t just a physical mechanism to keep the door closed; it also sends signals to your dishwasher that it’s safe to start the cycle. If your LG dishwasher error code relates to a door not being shut properly, then your door latch might be the problem. Here’s a detailed guide on how to ensure its proper function:

Step 1: Inspect the Door Latch Mechanism

Open and close the dishwasher door a few times. Pay attention to the sound and feel. It should securely click into place. If it feels loose or there’s no audible click, there might be an issue.

Step 2: Check for Obstructions

Over time, bits of food, soap residue, or even utensils can get stuck in the latch mechanism, preventing a tight seal. Examine the latch and the area around it for any visible obstructions, and clean them out if necessary.

Step 3: Look for Visible Damage

The latch might show signs of wear and tear. Look for broken parts, bending, or any signs of damage. If the latch appears compromised, it’s a good indicator that it might need replacement.

Step 4: Test the Electronic Signal

If you’re comfortable with electronics:

  • Make sure the power to the dishwasher is turned off.
  • Access the internal panel and locate the latch assembly.
  • Using a multimeter, check for continuity. If the multimeter shows a lack of continuity when the door is latched, the mechanism is faulty.

Step 5: Replace the Door Latch if Needed

If your latch is damaged or faulty:

  • Ensure the power is turned off for safety.
  • Access the internal side of the door, which may require removing screws.
  • Locate the door latch assembly and disconnect it.
  • Replace it with a new latch, ensuring all connections are secure.
  • Reassemble the door.

Step 6: Test the Door

After any adjustments or replacements, always test the door multiple times to ensure it’s securely latching and the dishwasher starts without error codes.

The door latch is an often overlooked but essential component of your LG dishwasher. Ensuring its proper function not only guarantees the safety of your appliance but also its efficiency. Regular checks and maintenance can save you from unexpected hitches in your daily routine. If you’ve addressed the latch and still face issues, consider seeking professional assistance or exploring other potential causes.

Fix 4: Monitor and Clear the Drain Hose

A common issue that can trigger an LG dishwasher error code is a clogged or kinked drain hose. If water isn’t draining properly from your dishwasher at the end of a cycle, it’s a clear sign that the drain hose might be the culprit. Ensuring a clear path for water to exit the machine is crucial for its proper function. Let’s delve into the steps to address this potential problem.

  • Step 1: Disconnect the Power: Before proceeding with any checks or fixes, always disconnect the power to your dishwasher for safety.
  • Step 2: Locate the Drain Hose: The drain hose typically runs from the back of your dishwasher to either your garbage disposal or directly to your sink’s drain. It’s a flexible tube that can be either ribbed or smooth, usually about an inch in diameter.
  • Step 3: Check for External Kinks: Sometimes the hose might be kinked, especially if the dishwasher has been recently moved or bumped. Run your hand along the length of the hose to feel for any obvious kinks or bends and straighten them out.
  • Step 4: Disconnect and Inspect the Hose:
    • Use pliers to pinch the wire clamp that holds the hose to the dishwasher or the drain.
    • Carefully detach the hose.
    • Once removed, visually inspect the hose for any blockages. Hold one end up to a light source; if light doesn’t pass through, there’s likely a clog.
  • Step 5: Clear Out Blockages: Using a straightened coat hanger or a long brush, gently push through any obstructions until they’re cleared. You can also run water through the hose to ensure it flows freely. If the hose has substantial buildup or damage, consider replacing it.
  • Step 6: Reattach the Hose: Once you’re certain the hose is clear, reattach it to the dishwasher and the drain. Ensure the hose is secure but avoid overtightening, which can cause damage.
  • Step 7: Run a Test Cycle: Reconnect the power to your dishwasher and run a short cycle. Monitor the drainage process to ensure water is exiting the machine smoothly and that there are no leaks at the hose connections. 

A clear drain hose is fundamental for the efficient operation of your LG dishwasher. Regularly checking for and addressing obstructions or damages can prevent unexpected error codes and improve your dishwasher’s overall performance. If you’ve addressed the drain hose and the problem persists, it may be time to look into other potential causes or seek the expertise of a professional.

Fix 5: Examine and Clean the Spray Arms

The spray arms in your dishwasher play a pivotal role in cleaning your dishes by ensuring water is evenly distributed throughout the unit. Over time, these arms can become clogged with food particles and mineral buildup, leading to reduced performance and, in some cases, an LG dishwasher error code. Here’s how to ensure they’re working optimally:

  • Step 1: Disconnect Electrical Power: For safety, ensure the dishwasher is unplugged or the circuit breaker is turned off before starting any maintenance.
  • Step 2: Access the Spray Arms: Open the dishwasher door and pull out the racks. Depending on your LG model, there might be a spray arm at the bottom, middle, or even the top. Familiarize yourself with their locations.
  • Step 3: Detach the Spray Arms: Most spray arms can be easily removed by unscrewing or unclipping them from their positions. Remember how they’re attached, so you can easily put them back later.
  • Step 4: Inspect for Clogs: Hold the spray arm up to a light source and look through the holes. This will help you spot any clogs or obstructions. Additionally, check for any signs of wear or damage.
  • Step 5: Clean the Spray Arms: For minor clogs: Use a toothpick or a small brush to gently remove food particles or debris from the holes.
    • For mineral buildup: Soak the spray arms in white vinegar for a few hours. This will help in dissolving mineral deposits caused by hard water.
    • For thorough cleaning: Use warm water and a mild detergent to scrub the exterior and interior of the spray arms.
  • Step 6: Rinse and Dry: Once cleaned, rinse the spray arms thoroughly under running water to remove any soap or loosened debris. Let them dry completely.
  • Step 7: Reattach the Spray Arms: Place the spray arms back in their original positions, ensuring they’re securely attached. They should rotate freely without any obstructions.
  • Step 8: Test the Dishwasher: Plug in or restore power to the dishwasher and run a short cycle. Check for improved water distribution and cleaning performance.
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Fix 6: Reset the LG Dishwasher

Sometimes, your dishwasher’s electronics might glitch, causing an LG dishwasher error code. Much like computers or smartphones, a simple reset can often clear out these electronic hiccups and get your appliance back to functioning correctly. Here’s how to perform a reset:

  • Step 1: Disconnect the Power: Safety should always come first. Turn off the dishwasher by either unplugging it from the electrical outlet or switching off the relevant circuit breaker.
  • Step 2: Wait for a Few Minutes: Once disconnected, wait for about 10 minutes. This duration allows the dishwasher’s internal electronics to fully reset.
  • Step 3: Reconnect the Power: After waiting, plug the dishwasher back into the outlet or turn on the circuit breaker to restore power.
  • Step 4: Run a Test Cycle: It’s essential to verify if the reset resolved the issue. Select a short wash cycle and let the dishwasher run. Monitor for any error codes or unusual behaviors during this cycle.
  • Step 5: Check Error Code Status: If you initially noted a specific error code, check if it has cleared post-reset. If the error persists, it might indicate a more significant underlying issue that needs addressing.
  • Step 6: Consult the Manual: Your LG dishwasher manual often contains a list of error codes and their meanings. If the error code persists after the reset, referring to the manual can provide insights into the nature of the problem.

Fix 7: Assess the Inlet Valve for Proper Water Flow

Water intake is fundamental for the functioning of your dishwasher. If your LG dishwasher error code points toward a water supply issue, the inlet valve might be the main actor. A faulty or clogged inlet valve can hinder water flow, affecting your appliance’s performance. Let’s dive into the steps to evaluate and address this concern:

  • Step 1: Turn Off Water Supply and Power: Safety first! Make sure you disconnect the dishwasher from the electrical source. Also, turn off the water supply to the dishwasher, usually located under the sink.
  • Step 2: Access the Inlet Valve: Open the dishwasher’s kick plate or lower panel, typically situated at the bottom. The inlet valve is usually a small unit with water and electrical connections leading to it.
  • Step 3: Inspect for Visible Damage: Look at the inlet valve closely. Check for any signs of cracking, corrosion, or leakage. If you notice visible damage, it’s a clear sign the valve needs replacement.
  • Step 4: Check the Screen Filter: Most inlet valves come with a screen filter that prevents debris from entering the appliance. If this filter gets clogged, water flow can be restricted. Carefully remove the screen and clean any debris or buildup.
  • Step 5: Test the Valve (For Advanced Users): If you’re adept with electronics:
    • Disconnect the electrical connectors from the inlet valve.
    • Use a multimeter to test the valve for continuity. If there’s no continuity, the valve is defective and needs replacement.
  • Step 6: Replace if Necessary: If you’ve determined the inlet valve is the issue:
    • Disconnect the water line and electrical connections from the old valve.
    • Install the new inlet valve by connecting it to the water line and then to the electrical connectors.
    • Ensure all connections are tight and secure.
  • Step 7: Turn On Water and Power: Restore the water supply to the dishwasher and switch on the power source. Run a test cycle to confirm that the water intake is functioning correctly.

Fix 8: Clean the Dishwasher Filters

A primary culprit for many LG dishwasher error codes relates to the cleanliness of the machine’s filters. Over time, these filters can accumulate debris and food particles, leading to reduced water flow, poor cleaning performance, and error messages. Here’s a step-by-step guide to ensure your filters are spick and span:

  • Step 1: Disconnect Electrical Power: Always prioritize safety. Ensure the dishwasher is unplugged or that the appropriate circuit breaker is turned off.
  • Step 2: Remove the Bottom Rack: Open the dishwasher door and slide out the bottom rack to grant full access to the dishwasher floor.
  • Step 3: Locate the Filter Assembly: At the base of the dishwasher, you’ll typically find the main filter and the fine filter. The main filter often looks like a cylindrical mesh, while the fine filter is a flat screen.
  • Step 4: Detach the Filters: Turn the main filter counterclockwise (typically a quarter turn) to unlock and lift it out. The fine filter should then easily lift out, although some models might have additional clips or locks.
  • Step 5: Clean the Filters: Rinse both filters under running tap water. Use a soft brush, like an old toothbrush, to gently scrub away any trapped debris or buildup. For stubborn particles, soaking the filters in warm soapy water for a few minutes can help.
  • Step 6: Inspect for Damage: Check both filters for any signs of wear, tearing, or damage. Damaged filters won’t effectively trap debris, which can affect cleaning performance. Replace any damaged filters with genuine LG parts to ensure compatibility.
  • Step 7: Reinstall the Filters: Place the fine filter back into its position, ensuring it sits flat. Then, insert the main filter into its slot and turn clockwise to lock it in place.
  • Step 8: Replace the Bottom Rack and Restore Power: Slide the bottom rack back into the dishwasher. Reconnect the appliance to the power source and run a short cycle to verify the efficiency of the cleaning and to check for any error codes.
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Preventing Tips for Maintaining LG Dishwasher Efficiency

Maintaining the efficiency and longevity of your LG dishwasher isn’t solely about responding to issues; it’s also about taking preventive measures. By following a few easy tips, you can avoid many common problems and ensure your appliance runs smoothly for years to come.

  • Run Regular Cleaning Cycles: Even dishwashers need a bath! Monthly, run an empty cycle with a dishwasher cleaner or a cup of white vinegar placed in the bottom. This helps in removing grease and limescale build-up, keeping the interior fresh and efficient.
  • Load the Dishwasher Properly: How you load your dishwasher matters. Avoid overcrowding and ensure items aren’t nesting or blocking the spray arms. Proper loading ensures effective cleaning and reduces wear on the machine.
  • Use the Right Detergent: Always opt for dishwasher-specific detergents. Moreover, if you’re in an area with hard water, consider using detergents that combat limescale build-up.
  • Regularly Check Seals: The rubber seals around the dishwasher door can degrade over time. Inspect them regularly and clean them with a soft cloth to ensure a tight seal, preventing leaks.
  • Rinse Before Loading: While modern dishwashers are quite efficient, rinsing off larger food particles before loading can prevent filter clogs and reduce the strain on the system.
  • Avoid Using Too Much Detergent: More doesn’t always mean better. Using excessive detergent can lead to build-up and decrease efficiency. Follow the recommended amounts.
  • Keep the Rinse Aid Dispenser Filled: Rinse aid isn’t just for sparkling dishes; it aids in the drying process, reducing water spots and the risk of mineral build-up.
  • Position the Dishwasher Away from Heat: Dishwashers generate heat, so positioning them away from other heat sources like ovens or direct sunlight can prevent overheating and improve efficiency.
  • Update Old Hoses: With time, hoses can wear out, leading to leaks and inefficient water flow. Replace old hoses with steel-braided versions for better longevity.

Taking a proactive approach to dishwasher care can significantly reduce the likelihood of error codes and malfunctions. Incorporating these preventive tips into your routine ensures not only a well-functioning LG dishwasher but also a longer lifespan for the appliance.


An LG dishwasher error code doesn’t always spell disaster. In many cases, with a little investigation and maintenance, you can rectify the issue without much hassle. Regular care and timely inspections can help you steer clear of these error codes in the future. Remember, when in doubt, it’s always a good idea to consult with a professional technician to ensure the longevity and efficient performance of your appliance.


Why is my LG dishwasher flashing an error code?

Error codes typically signal a specific issue or malfunction with your dishwasher’s operation.

Can I troubleshoot the error myself?

Yes, many common errors have DIY fixes, but always prioritize safety. Consult the manual first.

How often should I clean the filters?

Clean the filters monthly for optimal performance and to prevent clogging from debris.

Is resetting the dishwasher always effective?

Resetting can resolve minor glitches. However, persistent issues may need a deeper look.

Can hard water impact my dishwasher’s function?

Absolutely! Hard water can lead to mineral build-up, affecting performance and sometimes triggering error codes.