What causes LG Dishwasher OE?

A filter clogged with food residue, the most common cause in LG's guides. Food debris or a foreign object in the bottom of the tub. A drain hose under the sink that is kinked, crushed by stored items, clogged, or frozen. A clogged air gap on the sink, or a clogged garbage disposal or waste tee. A new garbage disposal or new install where the knockout plug was never removed from the disposal's dishwasher inlet. A drain hose that doesn't meet LG's install rules: no more than 12 ft (3.6 m) long, with its end 12 to 40 in (30 to 100 cm) above the floor. A power cut or tripped breaker mid-cycle, which can leave water in the tub (it drains when the dishwasher runs again). A faulty part, such as the drain pump, if the error persists after all of the above.

How do I fix LG Dishwasher OE?

Turn the dishwasher off. If it just ran, wait about 30 minutes before reaching in, since LG warns the tub and filter can be hot. Pull out the lower rack, remove any large debris from the bottom of the tub, then turn the mesh filter counterclockwise and lift it out. Separate the filter parts and wash them under running water with a soft brush. Reinstall and turn clockwise until it clicks. Watch for sharp edges on the stainless steel filter. Open the cabinet under the sink and check the drain hose (usually white, gray, or corrugated). Move anything pressing on it and straighten any kinks or pinches. If your sink has an air gap, remove its cover and clear any debris with a toothpick or small brush. If the garbage disposal or the dishwasher was just installed, check that the disposal's knockout plug was removed and that no plastic pieces are left inside the inlet. LG's install guide says the dishwasher can't drain otherwise. If you're not comfortable doing this, call the installer. To drain standing water, power the dishwasher on and press and hold Start for at least 3 seconds. LG says a forced drain runs for 2 to 3 minutes. Run a Heavy Duty or Normal cycle with no dishes or detergent to flush the unit and test the drain. If water still pools above the filter or OE returns, contact LG support.

When should I call a pro for LG Dishwasher OE?

OE keeps coming back after you've cleaned the filter, straightened the hose, and cleared the air gap. LG says a part may be faulty. Water keeps pooling above the filter level even after a forced drain. The dishwasher was recently installed and the drain hose is too long, too low, or too high. LG says the installer should correct it. The drain hose is split, crushed beyond straightening, or frozen in an exterior wall. You hear the drain pump humming but no water moves, or you hear nothing at all during the drain.

Code: OE🧺 LG Dishwasher

LG Dishwasher OE Error Code: Dishwasher Not Draining (Meaning, Causes, Fixes)

Q: What does LG Dishwasher OE mean?

OE on an LG dishwasher is a water outlet (drain) error: the tub didn't fully drain. LG lists a clogged filter, a kinked or crushed drain hose, a clogged air gap or disposal, and, on new installs, a knockout plug left in the garbage disposal as the usual causes. Clean the filter, straighten the hose, clear the air gap, then run an empty cycle. If OE keeps coming back, LG says a part may be faulty and to contact LG support. LG's dishwasher error-code guide calls OE a Water Outlet Error. During a cycle the dishwasher sprays and drains water over and over, and OE appears on the display when the tub isn't fully drained. LG's help articles describe it the same way: the unit has detected a drain problem, most often from food clogs or an installation issue. A little standing water below the filter is normal, since LG says it stays there to block sewer smells. Water pooling above the filter level is not normal.

Reviewed 2026-10-23 · Based on 5 manufacturer & service sources

What the code means

LG's dishwasher error-code guide calls OE a Water Outlet Error. During a cycle the dishwasher sprays and drains water over and over, and OE appears on the display when the tub isn't fully drained. LG's help articles describe it the same way: the unit has detected a drain problem, most often from food clogs or an installation issue. A little standing water below the filter is normal, since LG says it stays there to block sewer smells. Water pooling above the filter level is not normal.

Likely causes

A filter clogged with food residue, the most common cause in LG's guides
Food debris or a foreign object in the bottom of the tub
A drain hose under the sink that is kinked, crushed by stored items, clogged, or frozen
A clogged air gap on the sink, or a clogged garbage disposal or waste tee
A new garbage disposal or new install where the knockout plug was never removed from the disposal's dishwasher inlet
A drain hose that doesn't meet LG's install rules: no more than 12 ft (3.6 m) long, with its end 12 to 40 in (30 to 100 cm) above the floor
A power cut or tripped breaker mid-cycle, which can leave water in the tub (it drains when the dishwasher runs again)
A faulty part, such as the drain pump, if the error persists after all of the above

Safe DIY checks

⚠ Before you start

Unplug the appliance (or switch off its breaker) and shut off the water supply valves before removing panels or disconnecting hoses. Keep towels handy for residual water.

Turn the dishwasher off. If it just ran, wait about 30 minutes before reaching in, since LG warns the tub and filter can be hot.
Pull out the lower rack, remove any large debris from the bottom of the tub, then turn the mesh filter counterclockwise and lift it out. Separate the filter parts and wash them under running water with a soft brush. Reinstall and turn clockwise until it clicks. Watch for sharp edges on the stainless steel filter.
Open the cabinet under the sink and check the drain hose (usually white, gray, or corrugated). Move anything pressing on it and straighten any kinks or pinches.
If your sink has an air gap, remove its cover and clear any debris with a toothpick or small brush.
If the garbage disposal or the dishwasher was just installed, check that the disposal's knockout plug was removed and that no plastic pieces are left inside the inlet. LG's install guide says the dishwasher can't drain otherwise. If you're not comfortable doing this, call the installer.
To drain standing water, power the dishwasher on and press and hold Start for at least 3 seconds. LG says a forced drain runs for 2 to 3 minutes.
Run a Heavy Duty or Normal cycle with no dishes or detergent to flush the unit and test the drain. If water still pools above the filter or OE returns, contact LG support.

🛠 When to call a pro

OE keeps coming back after you've cleaned the filter, straightened the hose, and cleared the air gap. LG says a part may be faulty.
Water keeps pooling above the filter level even after a forced drain.
The dishwasher was recently installed and the drain hose is too long, too low, or too high. LG says the installer should correct it.
The drain hose is split, crushed beyond straightening, or frozen in an exterior wall.
You hear the drain pump humming but no water moves, or you hear nothing at all during the drain.

Parts that commonly fix it

Always match the part number to your exact model.

⚙

Dishwasher cleaner

LG suggests a cup of vinegar or dishwasher cleaner in an empty cycle after cleaning the filter and spray arms.

[affiliate link slot: AFFILIATE_SLOT_DW_CLEANER]

⚙

Dishwasher filter

Only if the filter is torn or damaged. Match the part to your model number.

[affiliate link slot: AFFILIATE_SLOT_DW_FILTER]

⚙

Dishwasher drain hose

Only if the hose is split or crushed. Match it to your model and keep it within LG's 12 ft limit.

[affiliate link slot: AFFILIATE_SLOT_DRAIN_HOSE]

Sources

Last reviewed 2026-10-23. Always confirm against the manual for your exact model number.

LG Dishwasher OE Error Code: Dishwasher Not Draining (Meaning, Causes, Fixes)

What the code means

Likely causes

Safe DIY checks

🛠 When to call a pro

Parts that commonly fix it

Dishwasher cleaner

Dishwasher filter

Dishwasher drain hose

Related codes

Sources