What Does Error Code OE Mean on an LG Washing Machine?
Clean the pump filter located behind the small access panel at the bottom front of the machine — a blocked filter is the most common cause of OE, and clearing it typically resolves the fault immediately (takes about 10 minutes).
Fault description
When your LG washing machine displays the OE error code, it means the appliance has detected that water is not draining away as it should. The machine monitors how long the drain cycle takes, and if water remains in the drum beyond the set time limit, it stops the programme and shows OE to alert you to the problem.
You may notice the drum is still full or partially full of water when the error appears. The machine will pause and refuse to continue until the issue is resolved. In some cases the pump may be audible — running but struggling — or completely silent, depending on the cause.
The good news is that OE is one of the more straightforward error codes to diagnose at home. The majority of cases come down to a blockage somewhere in the drain system, which you can usually clear yourself without specialist tools.
Causes
- Blocked pump filter — The pump filter traps lint, coins, hair grips, and other small debris before they reach the drain pump. Over time this filter becomes clogged and restricts or completely blocks water flow, which is the single most common cause of OE on LG machines.
- Kinked or blocked drain hose — The drain hose runs from the back of the machine to your standpipe or sink. If it has become kinked, squashed behind the appliance, or blocked with accumulated residue, water cannot exit the drum efficiently.
- Blocked or incorrectly positioned standpipe — If the standpipe or sink drain that the hose empties into is itself blocked, water has nowhere to go. Similarly, if the drain hose is pushed too far down into the standpipe, it can create a siphoning effect that prevents proper drainage.
- Faulty or seized drain pump — The drain pump is the component that actively forces water out of the machine. If a foreign object such as a coin or button has jammed the pump impeller, or if the pump motor has failed electrically, the machine will not drain regardless of how clear the hose is.
- Faulty pressure sensor or wiring — The pressure sensor tells the control board when the drum is empty. If the sensor, its connecting hose, or the associated wiring is faulty, the board may incorrectly believe water is still present and trigger OE even when the drum has drained.
- Main control board fault — In a small number of cases the control board itself fails to send the correct signal to operate the drain pump. This is relatively rare and is usually only suspected after all other causes have been ruled out.
Step-by-Step Fix
- 1
Switch off and unplug the machine
Before doing anything else, turn the programme dial to off and unplug the washing machine from the mains socket. If the drum is full of water you will need to drain it manually before you can access the filter safely — place towels on the floor first.
- 2
Drain residual water and clean the pump filter
Open the small access panel at the bottom front of the machine. You will see a short rubber drain hose with a cap and a larger circular filter cap. Pull out the small hose, remove its cap over a bowl, and let the water drain. Once empty, unscrew the filter cap anticlockwise and pull the filter out. Rinse it under a tap, remove all debris, wipe inside the housing, then refit the filter firmly and replace the cap on the small hose.
- 3
Check the drain hose for kinks or blockages
Carefully pull the machine away from the wall and inspect the full length of the drain hose. Straighten any kinks and ensure the hose is not being crushed. If you suspect an internal blockage, disconnect the hose from the standpipe and flush water through it from a tap to confirm it is clear.
- 4
Check the standpipe or sink drain
Pour a bucket of water directly into the standpipe or sink that the drain hose empties into. If it drains slowly or backs up, the household drain is blocked and needs clearing independently of the washing machine. Also confirm the drain hose is inserted no more than 15 cm into the standpipe to prevent siphoning.
- 5
Inspect the pump impeller for obstructions
With the machine unplugged, reach into the filter housing with your fingers and try to turn the pump impeller — the small plastic fan visible at the back of the cavity. It should rotate freely. If it is stiff or jammed, there is likely a foreign object lodged in the pump. Remove the obstruction carefully with long-nose pliers.
- 6
Run a short drain or spin cycle to test
Plug the machine back in and select a Spin or Drain programme. Watch and listen — you should hear the pump running and water exiting through the hose within the first minute or two. If the machine completes the cycle without showing OE, the fault is resolved.
- 7
Check the pressure sensor hose for blockages or damage
If OE persists after the steps above, locate the thin rubber hose connecting the pressure sensor to the drum (usually visible once the top panel is removed). Disconnect it at both ends and blow through it to confirm it is clear. A blocked or split pressure hose can cause false drain errors and may need replacing.
Affected models
Select your model to see its full troubleshooting page.
When to call a service technician
If you have cleaned the filter, confirmed the drain hose and standpipe are clear, and checked that the pump impeller turns freely, but the machine still displays OE, the drain pump itself has most likely failed electrically and will need to be replaced. This involves disconnecting wiring and hose connections inside the machine and is best handled by a service technician.
You should also contact a service technician if the machine makes a loud grinding or burning smell during the drain phase, if you find the pump impeller is cracked or broken, or if the error code returns repeatedly within a short period after cleaning — this can point to a failing pressure sensor or a control board fault that requires diagnostic equipment to confirm.
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Frequently Asked Questions
Can I still use my LG washing machine while it shows OE?
No — when OE is displayed the machine has stopped mid-cycle and will not continue. You should resolve the drain fault before running another wash. Leaving standing water in the drum for an extended period can also lead to unpleasant odours and mould growth.
How do I get the water out of the drum when the machine won't drain?
Use the small emergency drain hose located behind the access panel at the bottom front of the machine. Place a shallow bowl or tray underneath, remove the cap from the hose, and let the water flow out gradually. You may need to empty the bowl several times depending on how full the drum is.
My LG washing machine is making a humming noise but not draining — what does that mean?
A humming sound during the drain phase usually means the pump motor is receiving power and trying to run, but the impeller is jammed by a foreign object. Clean the filter and check the impeller for obstructions as described in the steps above. If the impeller is clear but the hum continues without any water movement, the pump motor itself may have failed.
How often should I clean the pump filter on my LG washing machine?
LG recommends cleaning the pump filter approximately once a month under normal use. If you wash heavily soiled items, pet bedding, or large loads frequently, clean it every two to three weeks. Regular cleaning takes less than ten minutes and is the single most effective way to prevent OE errors.
Will the OE error clear itself once the machine drains?
Once you have resolved the underlying blockage or fault and the machine successfully completes a drain or spin cycle, the OE code will clear automatically. You do not need to enter a reset sequence — simply fixing the cause and running the machine is sufficient to clear the error on LG models affected by this fault.