LG Dishwasher Error Codes | AppliancesCare

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📋 Error Code Index — LG Dishwasher

AEAnti-Flood Device Triggered CECommunication Error FEFill Error IEInlet Error OEDrain Error tETemperature Sensor Fault

Anti-Flood Device Triggered

Water detected in base tray — anti-flood protection activated.

Urgent

Possible Causes
Inlet valve stuck open — water continuously entering
Door seal damaged — leaking during cycle
Internal hose connection loose
Diagnostic Steps
1Disconnect power and water immediately
2Tilt appliance forward to drain base tray
3Inspect door seal and internal hose connections
4Test inlet valve — replace if passing water when off

Communication Error

Communication fault between main board and sub-board.

High Priority

Possible Causes
Wiring harness loose between boards
Sub-board failed
Main control board failed
Diagnostic Steps
1Check wiring harness connections at both boards
2Power cycle unit 60 seconds
3Replace sub-board or main board as indicated

Fill Error

Appliance not filling to required level within allowed time.

Medium Priority

Possible Causes
Water supply valve closed or restricted
Inlet valve solenoid failed
Low water pressure below 20 psi
Diagnostic Steps
1Verify supply valve fully open
2Check household water pressure
3Test inlet valve solenoid and replace if failed

Inlet Error

Water inlet issue — flow not detected correctly.

Medium Priority

Possible Causes
Inlet valve solenoid failed
Water supply pressure too low
Inlet screen clogged with mineral deposits
Diagnostic Steps
1Check water pressure at tap
2Remove and clean inlet screen
3Test inlet valve solenoid resistance and replace if failed

Drain Error

Appliance not draining within allowed time.

Low Priority

Possible Causes
Drain pump filter blocked with food debris
Drain hose kinked or incorrectly routed
Drain pump motor failed
Diagnostic Steps
1Remove and clean drain pump filter
2Check drain hose for kinks
3Test drain pump motor and replace if failed

Temperature Sensor Fault

Water temperature sensor open or out of expected range.

Medium Priority

Possible Causes
NTC sensor failed open or shorted
Connector to sensor loose or corroded
Diagnostic Steps
1Inspect sensor connector for corrosion
2Test NTC resistance — should vary with water temperature
3Replace NTC sensor if reading is OL or near zero

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Important Notice: Error code information on this page is based on LG manufacturer service documentation. Always disconnect power and water supply before inspecting. Fault behavior may vary by model year. AppliancesCare Appliance Repair LLC provides this information for educational purposes only.