What does LG Dishwasher Not Draining - Causes & Fix mean?

A kinked or clogged drain hose is the most common cause. Check the hose routing, clean the filter, and inspect the disposal connection.

How do I fix LG Dishwasher Not Draining - Causes & Fix?

Follow the step-by-step diagnosis below. The most likely fix is identified by checking power, sensor resistance, and control-board signals in order — using a multimeter and the part numbers documented in the parts reference table.

Can I keep running the equipment with this fault active?

Generally no. Faults on Appliance units are emitted when a sensor, safety, or control circuit is outside its operating envelope. Running through an active fault risks compressor, heater, or control-board damage. Diagnose and clear the fault first.

What part is most commonly replaced for LG Dishwasher Not Draining - Causes & Fix?

The most frequently replaced parts for LG Dishwasher Not Draining - Causes & Fix are listed in the Parts Reference section of this guide with OEM part numbers and typical price ranges. Check the table for direct replacements.

Is LG Dishwasher Not Draining - Causes & Fix a DIY repair or do I need a technician?

Sensor swaps, fan motor replacements, and condenser cleaning are typical DIY-level repairs. Anything involving refrigerant, gas, or high-voltage (>240V) work requires a licensed technician for both safety and code-compliance reasons.

LG Dishwasher Not Draining - Causes & Fix

LG Dishwasher Not Draining — What’s Happening

When your LG dishwasher won’t drain, water stays pooled in the bottom of the tub at the end of a cycle. The unit has detected that water is not exiting the tub as expected. LG ties this drain problem to issues in the hose, filter, air gap, disposal connection, or drain pump. You may see standing water after the wash or rinse, and the door may show an OE error code on some models.

Jump to Fix

Most Likely Causes

Kinked or pinched drain hose The hose behind or under the unit is bent sharply or crushed, blocking water flow.
Clogged drain hose or sink connection Food debris, grease, or other blockage has built up inside the hose, air gap, or the branch at the sink drain or garbage disposal.
Knockout plug not removed at disposal If you recently installed or replaced a garbage disposal, the plastic inlet plug inside the disposal inlet may still be in place, blocking the dishwasher drain line completely.
Dirty or clogged filter The filter at the bottom of the tub is full of food particles or debris, restricting water flow to the drain pump.
Incorrect hose routing or installation The drain hose is routed to a floor drain or trapped flat behind the unit, preventing proper drainage during the cycle.
Blocked or failed drain pump The pump is jammed with debris or has failed electrically, so it cannot move water out of the tub.

How to Diagnose and Fix

Turn off power to the dishwasher at the circuit breaker or unplug the unit before you open any panels or touch any hoses.
Pull out the lower rack and remove the filter assembly from the sump at the bottom of the tub, then rinse it under running water to clear any food or debris.
Pull the dishwasher forward enough to inspect the entire drain hose from the pump outlet to the sink or disposal connection, looking for kinks, pinches, or crushed sections.
Check the air gap on your countertop (if installed) by removing the cap and clearing any debris inside, and inspect the sink drain or garbage disposal inlet for clogs or a forgotten knockout plug.
Confirm the drain hose is routed in a high loop or through an air gap and is not connected to a floor drain, which LG does not support for proper operation.
If all drain paths are clear, access the drain pump under the tub, check for debris blocking the impeller, and test the pump for electrical continuity or listen for motor hum during a drain cycle.
Run a short rinse or drain-only cycle (if your model supports it) after clearing any blockage to verify water drains completely and the error does not return.

Parts You Might Need

Part	Notes
LG dishwasher drain pump	Amazon \| Required if the pump does not run or is mechanically jammed and cannot be cleared.
LG dishwasher drain hose	Amazon \| Needed if the original hose is crushed, cracked, or permanently kinked.
Dishwasher filter assembly	Amazon \| Replace if the filter screen is torn or the housing is cracked and cannot be cleaned.

If your appliance also shows a code on the display, these match this problem:

When to Call a Pro

Call a pro if you have verified the hose, filter, and disposal connection are all clear but water still will not drain, or if the drain pump runs but no water moves. A technician can test pump voltage, check for control board faults, and replace the pump or wiring harness safely. Also call for help if you are uncomfortable working under the sink, moving the dishwasher, or accessing electrical components inside the unit.