LG · Dishwasher
LG Dishwasher FE Error Code
Overfill detected in the tub
What this error means
FE is a Fill Error tied to overfill—the tub gained more water than the level sensor expected, or the float triggered flood protection.
How FE is detected
LG dishwasher models lock the door or lid before energizing fill, heat, or high-speed spin. FE means the latch switch never sent a "locked" signal to the main control, or the lock motor did not complete its travel. On LG LDF5545ST, LG LDP6797ST, and similar variants, clothing caught in the gasket, a misaligned strike, or a failed latch assembly are the most common mechanical causes—not the board itself.
Inspect the door gasket perimeter and strike alignment before replacing the latch. Inlet valve stuck open from scale on the solenoid is reported frequently on this code. After correcting mechanical issues, turn off the under-sink supply valve immediately. If the latch clicks but FE persists, the door lock switch or wiring harness to the control board likely needs testing with a multimeter.
Do not force the door open during an active cycle; wait for the lock to release when the board de-energizes the lock motor—usually two to three minutes after canceling power on most LG units.
Common causes
- Inlet valve stuck open from scale on the solenoid
- Float switch stuck in the down position
- Drain failure leaving water from a prior cycle
- Detergent oversuds pushing water over the door seal
Step-by-step fixes
- 1Turn off the under-sink supply valve immediately
- 2Cancel the cycle and run drain-only if available
- 3Inspect the float dome in the tub corner—it should move freely up and down
- 4Use the recommended detergent amount for soft water areas
When to call a technician
If the tub fills while power is off, replace the inlet valve before operating again.
Affected models
- LG LDF5545ST
- LG LDP6797ST
- LG LDTS5552S
Prevention & maintenance
- Wipe the door gasket weekly and avoid overloading items against the seal—FE often starts as a slow leak or latch misalignment.
- Record when FE appears in the cycle and whether it clears after a 60-second power reset on your LG dishwasher—that detail speeds diagnosis if you call service.
- Keep the model and serial number from the rating plate when ordering parts for FE; LG uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting FE; reversed plugs on pumps and valves cause immediate repeat faults.