The drain filter traps food particles (dishwasher) or lint and debris (washer). When it becomes clogged, water can't flow through to the drain pump. LG recommends cleaning the filter monthly, but most people clean it far less frequently.
The drain hose can become kinked behind the appliance or clogged with buildup over time. In South Florida's hard water conditions, mineral deposits can accumulate inside the hose, gradually restricting flow.
The drain pump motor can burn out, or the pump impeller can break. If you hear a buzzing sound during the drain cycle but no water flows, the pump is likely the issue. Pump lifespan is typically 7-10 years.
If your kitchen sink or laundry drain is slow, the appliance may not be able to drain because the plumbing itself is backed up. Run water in the connected sink to check flow.
For dishwashers: remove the bottom rack and unscrew the filter assembly. Rinse under running water. For washers: locate the small access panel on the front bottom of the machine, place towels down, open the drain filter cap slowly (water will flow out), and clean the filter.
Pull the appliance away from the wall and inspect the drain hose. Straighten any kinks. Disconnect the hose and flush it with water to clear blockages. For washers, the hose should be elevated 18-30 inches above the floor for proper drainage.
If your dishwasher drains through the garbage disposal, run the disposal for 30 seconds with water flowing. A clogged disposal is a common cause of dishwasher OE errors.
Unplug the appliance for 10 minutes, then plug it back in and run a drain-only cycle. This can clear false OE errors caused by sensor glitches.
If cleaning the filter and checking the hose doesn't resolve the OE error, the drain pump likely needs replacement. This is a moderate repair that involves accessing the bottom of the appliance, disconnecting the pump motor, and installing a new unit. Call a professional if you notice water pooling under the appliance, hear grinding noises from the pump area, or if the error appears on every cycle.
$0 (filter cleaning) – $20 (new drain hose)
Parts only, if needed
$140 – $320 (includes drain pump replacement if needed)
Parts + labor, 90-day warranty
OE stands for 'drain error' on LG appliances. The machine cannot pump water out within the expected time. Common causes include a clogged filter, blocked drain hose, or faulty drain pump.
Start by cleaning the drain filter and checking the drain hose for kinks or clogs. Run the garbage disposal if connected. If the error persists after these steps, the drain pump may need professional replacement.
Recurring OE errors usually indicate a partially clogged drain system. Even if the washer drains sometimes, a partial blockage can trigger the error intermittently. Thoroughly clean the filter, flush the drain hose, and check the standpipe for blockages.