LG Microwave Error Code dE

The dE code on an LG microwave means the appliance has detected a Divider Missing Error. It indicates that the microwave cannot confirm the cooking divider is correctly inserted for the mode you have selected. The unit will not proceed with cooking until the divider is detected as properly in place. The issue may involve the divider itself, the detection switch, or the wiring connected to it.

You should not attempt to bypass or ignore the dE error. The microwave is designed to prevent operation in specific modes when the divider is not confirmed as correctly installed. Attempting to use a cooking mode that requires the divider without it properly in place could result in uneven or incorrect cooking results and may indicate a sensor fault that should be addressed before continued use.

If the fix is simply reinserting the divider correctly, there is no cost involved. If the divider detection switch has failed and needs replacement, parts and labor costs typically range from around $50 to $150 depending on your location and the service provider. If the issue escalates to a control board replacement, repair costs can range from $150 to $300 or more, at which point comparing the repair cost to unit replacement value is worth considering.

Start by removing and reinserting the cooking divider, making sure it is fully seated in both guide slots on both sides of the cavity. If the error continues after correctly inserting the divider, inspect the divider detection switch and its wiring harness for damage or loose connections. A faulty detection switch will need to be replaced if it does not show continuity when the divider is engaged.

A simple power reset, such as unplugging the unit for a minute, is unlikely to permanently clear the dE error because the code is triggered by an active sensor condition rather than a software glitch. If the underlying cause, such as a missing or improperly seated divider, is not corrected, the error will return as soon as the relevant cooking mode is selected. Address the physical cause first, and the error should clear on its own.