What FE means (lg fe error)
An lg fe error on an LG dishwasher means an overfill condition — the tub has more water than it should. The control raises FE and usually drains automatically for safety, which points to an inlet valve that is not closing fully or a float/overfill switch that is not stopping the fill.
Symptoms to look for
The signs below help confirm you are dealing with this condition rather than a different fault on your LG Dishwasher. You may see one of them or several together, and they can build up gradually or appear suddenly after a power event, a long door opening, or recent service.
- The display shows “FE”
- The dishwasher overfills or keeps filling
- The unit drains automatically to protect itself
- Water may be heard entering even when paused
Common causes
Several different faults can produce these symptoms. Working through the most likely causes in order helps separate a quick, owner-level check from a problem that needs trained service and the correct LG parts.
- Inlet valve stuck open — the valve does not close fully
- Float/overfill switch fault — the switch does not stop the fill
- Control fault — the board mismanages the fill
- Debris under the float — the float cannot rise to signal full
Troubleshooting steps you can try
Work through these checks in order before calling for service. Stop wherever you are unsure, or where high-voltage parts, gas, the sealed refrigeration system, or a heat-pump compressor are involved, and hand the rest to a qualified technician.
- Turn off the water supply shutoff to stop further filling.
- Check the float inside the tub moves freely and is not held down.
- Power the dishwasher off at the breaker for several minutes, then restore.
- Because an overfill can leak, arrange service if FE returns.
Parts a technician may replace
Depending on what the diagnosis shows, a technician may inspect, test, or replace the water inlet valve, float/overfill switch, drain pump, and control board. The correct part for your LG Dishwasher is matched from the model and serial number, and genuine LG components are fitted rather than generic substitutes so that performance, safety, and the appliance’s long working life are all protected. Confirming the failed part before ordering avoids replacing more than the fault actually requires.
When to call a technician
FE needs a technician to test the inlet valve and float/overfill switch and replace whichever is at fault. When the fix calls for trained service, book a visit through our scheduling page and an experienced, qualified technician will diagnose and repair it. For manufacturer documentation and model lookup, see the manufacturer at lg.com/us.
Prevention and care
Regular care keeps this condition from returning on your LG Dishwasher. Keep filters, vents, and the condenser or exhaust path clean, avoid overloading or blocking airflow, check that doors and seals close cleanly, and follow the LG maintenance guidance for your model. Because this unit relies on electronic control, protect it with a stable, correctly rated power supply and have any built-in or laundry installation done to LG specification so the control never sees an out-of-range condition. If a code appears, note exactly what was shown before you reset the appliance — that record helps the technician reach an accurate diagnosis and avoid replacing parts unnecessarily.
Related help and LG resources
Browse other LG Dishwasher diagnostics, read about professional LG Dishwasher repair, look up your unit in the LG models reference, or the related AE leak error, or schedule a service visit. For LG manufacturer documentation and model lookup, visit the manufacturer at lg.com/us.
