What this error means
Overflow error — the dishwasher has detected an abnormally high water level
The FE error on an LG dishwasher means the water level sensor has detected that the water inside the machine has exceeded the safe maximum. This is a safety-critical fault. The most common causes are a stuck-open inlet valve allowing uncontrolled water entry, a blocked filter preventing normal water turnover and causing gradual level accumulation, a failed water level sensor, or a blocked pressure hose causing the sensor to under-read the true water level.
What you'll need first
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Step-by-step
Symptoms to look for
- Dishwasher fills to an unusually high level — water visible near or at the door seal
- FE displayed during or shortly after the fill phase
- Water escaping from the door seal or vent during the fill phase
- Machine fills but does not proceed to wash — sits full of water with FE showing
What to check
Turn the water supply tap fully closed and unplug the machine. Wait 5 minutes then open the door very slowly — stand back as water may pour out if the level was high. Have towels ready. Scoop out excess water with a jug if the level is at or above the door seal.
Remove the lower basket and thoroughly clean both the cylindrical coarse filter and the flat fine mesh filter. A blocked filter prevents water from circulating correctly — water accumulates in the tub between fill phases and the level rises gradually over the course of a long programme, eventually triggering FE. Refit the filter firmly.
With the dishwasher unplugged, remove the lower kickplate panel. Locate the narrow pressure hose running from the base of the tub to the water level sensor. Disconnect it from both ends and blow through it — airflow must be completely unobstructed. Clear the tub connection stub with a cotton bud if blocked with detergent residue.
With the machine unplugged and the water supply turned off at the wall, check whether water drips or trickles into the tub even with the machine unplugged. Open the tap briefly and watch the spray arm or tub base for any water entry. Any water with the machine unplugged confirms the valve is mechanically stuck open and must be replaced.
Once the tub is drained and any repairs have been made, restore power and water and run a Quick Wash while remaining present throughout. Confirm the water level stabilises at the normal operating level — well below the door seal opening.
When to call an engineer
- Inlet valve is stuck open — water enters with machine unplugged and tap turned on
- Pressure sensor does not change state when pressure is applied — sensor has failed
- Pressure hose confirmed clear but overfilling persists — control board relay fault
- All components test correctly but FE returns on every cycle — engineer required
Frequently asked questions
Is FE dangerous on an LG dishwasher?
Can a blocked filter cause FE on an LG dishwasher?
How do I safely open the door after an FE fault?
What is the difference between FE and OE on an LG dishwasher?
🎯 What is likely causing this fault?
⚠️ Estimates based on common faults — not a guaranteed diagnosis. Always verify before ordering parts.
Parts you may need
Enter your model number to filter results to your exact machine
Usually found on a label inside the door frame or on the back panel of the machine.
| Part | Approx. UK Cost | Find it |
|---|---|---|
| Inlet Valve | £20 - £30 | 🏷️ eBay UK → |
ℹ️ Prices are approximate. Always check the part number matches your model before ordering. Not sure of your model number? Find out how to locate it here.