LG Dishwasher Error Code OE — Drain Error
What this means
The OE error code on LG dishwashers indicates the machine cannot drain water within the allotted time. This is commonly caused by a clogged drain filter, a blocked drain hose, food debris in the sump area, or a faulty drain pump. A garbage disposal knockout plug that was not removed during installation is another frequent cause.
Step-by-step fix
4 stepsClean the drain filter
Remove the lower rack. Locate the drain filter assembly at the bottom of the dishwasher tub. Turn the filter counterclockwise and lift it out. Rinse it under running water and use a soft brush to remove food debris and grease.
LG recommends cleaning the drain filter after every wash or at least once a week for optimal drainage.
Check the drain hose
Pull the dishwasher out (if possible) or check under the sink. Inspect the drain hose for kinks, loops, or clogs. If the dishwasher drains through a garbage disposal, run the disposal first to clear any food buildup in the connection.
On new installations, make sure the knockout plug inside the garbage disposal's dishwasher inlet was removed.
Inspect the sump area
With the filter removed, look into the sump area at the bottom of the dishwasher. Remove any glass shards, food debris, or objects that may be blocking the drain impeller.
Broken glass is a common drain blocker in dishwashers — use caution when reaching into the sump.
Test the drain pump
If the filter and hose are clear, run a cycle and listen for the drain pump. A humming sound with no water movement indicates a jammed pump. No sound at all suggests a failed pump motor.
When to call a professional
If the drain pump is not working after clearing all physical blockages, it needs replacement. Accessing the drain pump on dishwashers requires tilting the machine and working underneath, which is best done by a technician.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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