How To Fix LG Dishwasher Error Codes?

Technically Reviewed by Oleg Chudnovski, CEO on May 22, 2025 | Written by Fix Appliances CA Editorial Contributors

A dishwasher is a convenient and time-saving appliance commonly found in modern households, with LG being one of the most trusted and popular brands. Despite LG’s reputation for producing reliable, high-quality dishwashers, operational issues can occasionally arise, leading to the display of error codes.

While some LG dishwasher error codes indicate minor issues that can be resolved through simple troubleshooting, others may signal more complex problems that require professional repair. To effectively address these issues, it’s essential to first understand the meaning of the specific error code displayed. Below, we outline common LG dishwasher error codes and provide step-by-step solutions to help you restore your appliance to optimal performance.

What Do LG Dishwasher Error Codes Mean?

These error code descriptions can help you identify an issue with your LG dishwasher.

You may read the LG dishwasher troubleshooting manual to determine the error code displayed on the appliance.

What are The Most Common Error Codes?

An Error Code is likely if you see a blinking light on your dishwasher. Read below to learn how to fix certain problems with the appliance.

IE Error Code

An IE error code on an LG dishwasher indicates it isn't filled with water. Naturally, this implies that your dishes will not be washed. However, there are a few basic methods for testing your water connection.

The first step is to check that your water supply is separated from the valve to ensure it is completely open. Also, inspect your water intake supply hose for kinks. In addition, examine the filter screen on the water entry valve for any obstructions. If you detect any clogs, remove them, and your LG dishwasher should work again fully.

Error Code nE

This error code means a diverter motor failure. Inspect the wire harness connections on the diverter motor and position switch.

To do so, unplug the LG dishwasher’s power supply. All disconnected wires should be rejoined. If they are not loose, disconnect them and determine the motor’s resistance by using a multimeter. If there is an infinite resistance, you must change the diverter motor.

HE Error Code

When you notice this error number, your dishwasher's thermistor or temperature gauge detects that the water is not heating or above the recommended temperature.

If the dishwasher's temperature sensor indicates a higher temperature than is typical for an effective LG dishwasher functioning, you may need to switch out the electronic control board. This is due to a blocked heater relay on the control board, which always keeps the heating element on.

Error Code OE

An OE error code indicates a clog in the sink drain or waste disposal. Nevertheless, if you examine both of the elements and they operate as usual, then inspect the dishwashing hose.

Unplug it from the sink of the garbage disposal connector and inspect for grease clogs. The LG dishwasher may have an air gap, so you should clear any blockages. Don’t forget to switch the dishwasher off from the power source. Also, check the sump and drain pumps for dirty elements.

E1 or AE Error Code

A low tub water level or an excessive circulation pump speed might trigger an LG dishwasher error E1 or AE. It may also get some water into the bottom of the appliance cabinet, causing the flood switch.

Disconnect the dishwasher and turn off the water supply. The liquid may leak from the fill line, the drain pump, the hose, the door seals, or the sump. As a result, call a professional to fix the dishwasher.

Error Code LE

The LE error appears when the pump impeller is clogged and unable to spin. Disconnect the dishwasher, check for clogs, and clear the sump from foreign objects and dirt.

To ensure the sump is clean, inspect the pump’s wiring connections and reconnect any that are unplugged. If you haven’t found the issue, call an LG-authorized appliance technician, who will use a multimeter to examine the appliance's resistance.

Error code FE

This error code means that your dishwasher's drain pump will operate automatically. A leaking water inlet valve or a blocked sensor on the electronic control panel may cause your dishwasher to fill continuously.

You should disconnect the dishwasher and observe whether it remains filled with water. If this happens, you should replace the water inlet valve.

tE Error Code

The tE error indicates that the thermistor may be malfunctioning. Check the component for ohms and temperature within an acceptable range. If the measurements are lower than the standard ones, change the thermistor.

Resolving LG Dishwasher Error Codes

If your LG dishwasher displays error codes or visibly malfunctions, attempt to examine the issue properly. Some of these issues can be readily resolved with basic troubleshooting, such as restarting the dishwasher or simply replacing a component.

However, some failures are better left to qualified repair technicians, particularly when safety is a concern. Contact Spark Service PRO appliance repair professionals to provide you with the LG dishwasher diagnostic mode and fix it quickly. Each repair is covered by our service and parts warranty. To learn more about the services we offer, don't hesitate to get in touch with our customer service department at  1-888-242-0777.