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OE

LG OE: Drain error — water not draining out

The dishwasher detected that water is not draining from the tub within the expected time. It is most often caused by a clog or a drain-hose installation fault.

DIY fix

By the FixByModel editorial team · Verified 2026-09 · Researched against manufacturer support & repair references (below)

Most likely causes

  1. Clogged or dirty filters in the tub bottom
  2. Kinked, clogged, or frozen drain hose
  3. Blocked drain air gap or plugged garbage-disposal knockout
  4. Drain hose installed too high, too long, or without a proper high loop
  5. Faulty drain pump
The drain path — check in this order
1Tub
2Filter / sump
3Drain pump
4Drain hose
5Disposer / standpipe

Schematic illustration of a typical dishwasher — not your exact model.

Before you start — unplug the appliance and turn off the water supply. You'll be working near water and electrical parts, and drained water can be hot. If a step involves the pump, wiring, or opening the cabinet and you're unsure, stop and call a qualified technician.

Step-by-step fix

1Clean the filtersRemove and clean the tub filters with a soft brush under running water, then reassemble and reinstall them.
2Inspect the drain hoseCheck the drain hose for kinks, clogs, or (in cold climates) freezing, and straighten any bends.
3Check the air gap and disposalClear debris from the drain air gap and, if the drain connects to a garbage disposal, confirm the disposal's knockout plug was removed.
4Verify hose height and loopEnsure the drain hose end sits about 10-12 inches above the tub bottom or has a proper high loop so water cannot siphon back in.
5Power reset and retestTurn the dishwasher off at the breaker for about 10 seconds, restore power, and start a new cycle.

Still showing OE?

If you’ve worked through every step and OE keeps returning, an internal part likely needs testing and replacement. That’s a job for a qualified appliance technician, who can measure the suspect part against the service-manual spec before replacing it.

Which models this applies to

LG dishwashers. Most LG dishwashers; if OE appears on the very first cycle after install, it usually points to a drain-hose installation error.

FAQ

What does LG OE mean?

Drain error — water not draining out. The dishwasher detected that water is not draining from the tub within the expected time. It is most often caused by a clog or a drain-hose installation fault.

What causes LG OE?

The most likely cause is clogged or dirty filters in the tub bottom. Other causes include Kinked, clogged, or frozen drain hose; Blocked drain air gap or plugged garbage-disposal knockout; Drain hose installed too high, too long, or without a proper high loop; Faulty drain pump.

Can I fix LG OE myself?

Usually yes. Start by working through the steps above, beginning with: remove and clean the tub filters with a soft brush under running water, then reassemble and reinstall them.