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LG Dishwasher OE Error Code: What It Means & How to Fix It

OE = Dishwasher not draining. OE on an LG dishwasher means it isn't draining. LG says it's usually food debris in the filter or an installation issue: a kinked drain hose, a clogged air gap, or a disposal knockout plug that was never removed.

Can you fix it yourself? Yes

Check your model: Error codes can mean different things on different LG models. Find your model number (usually on a sticker inside the door or lid, or on the back) and confirm the code in your user manual.
Safety first: Unplug the appliance (or switch off its breaker) before you remove panels, filters or hoses. Turn off the water supply valves before you disconnect any hose, and keep a towel and shallow pan handy. Never work on wiring, gas lines or sealed refrigerator systems yourself.

Quick checks (2 minutes)

How to fix LG Dishwasher OE

  1. Turn the dishwasher off.
  2. Pull out the lower rack, remove large debris, twist out the mesh filter (counterclockwise) and scrub it under running water. Watch for sharp edges on stainless filters.
  3. Reinstall the filter clockwise until it clicks.
  4. Under the sink, make sure the white or gray drain hose isn't crushed or kinked.
  5. Clean the air gap cap on the sink if you have one, and run the disposal.

Still showing OE?

If OE keeps returning after the filter, hose and air gap are clear, LG says a part may be faulty. Contact LG support.

Likely part if the basics don't fix it:

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Repair or replace?

If the appliance is under warranty, call LG first, since a repair may be free. Out of warranty, a common rule of thumb is to compare the repair quote with the cost of a new unit and the appliance's age before deciding.

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FAQ

What's the knockout plug?

A plastic plug inside a new garbage disposal's dishwasher inlet. LG says if it isn't removed, the dishwasher can't drain.

How long can the drain hose be?

LG says no more than 12 ft, with the end 12–40 inches above the floor.

Source

Code meaning and official steps from: https://www.lg.com/us/support/help-library/how-to-fix-an-lg-dishwasher-that-is-not-draining--20155352254013. Last verified 2026-10-21.

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