What does the LG FE error code mean?
FE (Fill Error — overflow) means the dishwasher has detected that water has risen above the maximum safe level. The inlet valve is either stuck open and continuing to fill, or the water level sensor has failed and is not signalling to the control board to stop filling. The machine will enter emergency drain mode.
🔍 Symptoms
- Machine fills continuously and will not stop
- Water may be visible overflowing from the door seal area
- Machine enters continuous drain mode but keeps refilling
- Display shows FE and the machine is locked
- Water puddle found under or in front of the machine
How to fix the LG FE error code
- Cut off the water supply to the machine immediately by turning the tap behind/under the machine to the off position.
- Unplug the machine from the mains.
- Open the door carefully and use towels and a sponge to remove excess water.
- The most likely cause is an inlet valve solenoid that has failed in the ‘open’ position — it is not receiving the signal to close. Replace the inlet valve.
- Less commonly, the water level sensor/float switch is faulty. Check the float switch inside the base tray — ensure it moves up and down freely and is not stuck in the ‘low’ position.
Frequently Asked Questions (FAQ)
Q: Is the FE error dangerous on an LG dishwasher?
A: Yes, potentially. Uncontrolled filling can cause significant water damage to kitchen cabinetry and flooring. Cut the water supply immediately when FE appears.
Q: After turning off the water and unplugging, the FE error is gone — can I just restart?
A: No. The root cause (stuck inlet valve or failed sensor) is still present and will cause FE to recur on the very next cycle. Fix the cause before restarting.
Q: Could using non-dishwasher detergent cause an FE error?
A: Not directly, though excess foam can confuse the water level sensor into thinking the machine is not full and continue filling. This is more likely to cause OC (overflow) than FE.
🔧 Parts You May Need
| Part | Approx. UK Cost |
| Water Inlet Valve | £18–£42 |
| Float Switch / Water Level Sensor | £12–£28 |
Affiliate disclosure: This page contains affiliate links. We may earn a small commission if you buy through them, at no extra cost to you.