Welcome to our guide to the LG dishwasher OE error code! If you’ve ever seen the OE error fault on your LG dishwasher, you’re in the right place. In this post, we’ll explain what this code means, it’s possible causes, and provide simple solutions to help you fix the issue.

LG Dishwasher OE Error Code

So, if you’re looking for quick and easy answers to tackle the OE error, keep reading!

LG dishwasher OE error code explained!

The OE error code on LG dishwashers typically indicates a problem with the drain system. The error itself is an abbreviation for “outlet water error,” which means that the dishwasher is having difficulty draining water properly.

Common Causes of LG Dishwasher OE Error Code: Troubleshooting the Drainage Issue

There are several possible reasons why this error code may appear:

  • Firstly, it could be due to the incorrect installation of the drain hose.
    • If the hose is not properly connected or is bent at a sharp angle, it can impede the flow of water and trigger the OE error.
  • Another common cause is a blockage or obstruction in the drain hose.
    • Debris, such as food particles or other objects, can accumulate and create a clog, preventing proper drainage.
  • If your dishwasher is connected to a garbage disposal, it’s essential to ensure that the knockout plug has been removed from the disposal connection.
    • Failing to remove this plug can lead to drainage issues and trigger the OE error code.
OE Error Code ensure that the knockout plug has been removed from the disposal connection
  • In some cases, the air gap or disposal itself may be clogged, causing water to back up and triggering the fault code.
    • Cleaning or unclogging these components can help resolve the issue.
  • Clogged filters within the dishwasher can also contribute to the OE error.
    • It’s important to regularly clean and maintain these filters to prevent blockages that can impede drainage.
  • Additionally, the problem may lie with the drain pump impeller.
    • If the impeller is broken, stripped, or damaged, it won’t be able to effectively drain water from the dishwasher, resulting in the OE error.
  • Faulty drain pump.
  • Finally, the main board may not be detecting that water has properly drained from the tub.

Troubleshooting the LG Dishwasher OE Error Code: Simple Solutions for Effective Drainage

If you encounter the OE error code on your LG dishwasher, follow these troubleshooting steps to resolve the issue:

  • Check the drain hose: Ensure that the drain hose is properly installed, without any kinks or bends that may obstruct the water flow. Straighten the hose if necessary.
  • Clear any blockages. Inspect the drain hose for any blockages or debris. Remove any obstructions that may be preventing proper water drainage.
  • Clean the filters: Remove and clean the filters within the dishwasher. Clogged filters can hinder drainage.
    • Refer to the user manual for instructions on how to properly clean the filters.
OE Error Code Clean the filters
  • Verify the knockout plug: If your dishwasher is connected to a garbage disposal, make sure the knockout plug has been removed where the dishwasher drain connects to the disposal.
    • This allows for proper drainage.
  • Check the air gap or disposal: If you have an air gap or disposal, inspect them for clogs or blockages.
    • Clean or unclog these components to restore proper drainage.
  • Inspect the drain pump impeller: Check the drain pump impeller for any signs of damage or obstruction.
    • If broken or stripped, the drain pump may need to be replaced.
OE Error Code Inspect the drain pump impeller
  • Verify the sump and check the valve. Inspect the sump area and check the valve for any debris or blockages.
    • Clear any obstructions that may hinder water drainage.
  • Reset the dishwasher: Turn off the dishwasher, unplug it from the power source, wait for a few minutes, and then plug it back in.
    • This can sometimes reset the system and clear temporary errors.
  • Inspect the drain pump: Check the wiring harness between the drain pump and the main board for any loose or damaged connections.
    • Ensure that the wiring is secure and intact.
  • Measure the drain pump’s resistance: Using a multimeter, measure the drain pump’s resistance. The ohmic value should be around 4 ohms.
    • If the resistance is not within this range, it indicates a faulty drain pump. In such cases, consider replacing the drain pump.
LG dishwasher Drain Pump Resistance Measurements
  • Consider replacing the main board. If all other troubleshooting steps have been exhausted and the OE error code persists, it may indicate a malfunctioning main board. Consider replacing the main board to resolve the issue.

It’s important to note that electrical components and wiring should be handled with caution.


Understanding the LG dishwasher OE error code is essential for troubleshooting and resolving any issues that may arise with your dishwasher. By knowing what the OE code signifies, identifying potential causes, and following the suggested solutions, you can confidently address the problem and restore your dishwasher’s functionality.

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