LG · Dishwasher

OE

Overfill Error

Severity

High

If your LG Dishwasher is displaying the error code OE, the control board has detected a fault identified as "Overfill Error". Understanding the root cause helps you avoid an unnecessary service call.

Owner's Summary

Water is overflowing your LG dishwasher. Turn off the water supply valve under the sink and unplug the machine immediately to prevent water damage to your kitchen floor and cabinets.

Symptoms

LG dishwasher filling without stopping, water overflowing, OE code

Common Causes

Water inlet valve stuck open
Float switch stuck in down position
Pressure chamber clogged
PCB relay failure

How to Fix

1 Close water supply valve immediately
2 Unplug machine
3 Drain excess water
4 Replace water inlet valve
5 Test and replace float switch or pressure sensor

Tools You'll Need

Towels / Bucket

Most of these fixes need only basic hand tools. If your repair requires opening electrical housings or testing live components, a multimeter and basic electrical safety knowledge are essential — when in doubt, call a technician.

Technical Explanation

OE is triggered when the float switch or water level sensor signals an overflow condition. The PCB should have already cut the inlet valve, so OE indicates either the valve failed to close or the sensor is providing an incorrect reading.

Is It Safe to Keep Using?

Urgent. Disconnect water and power before any further steps.

Technician's Pro Tip

The float switch in LG dishwashers can get stuck in the down position from food debris under the float cap. Remove the float cap from inside the tub and clean underneath it — a stuck float is a free fix that prevents a false overfill reading.

Related Codes

OE — LG Washing Machine

Drain Error — Outlet Error

High

IE — LG Washing Machine

Inlet Error — Water Not Filling

High

LE — LG Washing Machine

Motor Error — Locked Motor

High

Frequently Asked Questions

What does error code OE mean on a LG Dishwasher?

Code OE on a LG Dishwasher indicates "Overfill Error." In practice, the most common trigger is water inlet valve stuck open. Severity is rated high, and typical repair costs range from $20 to $200.

Can I fix OE myself, or do I need a technician?

Many cases of OE can be resolved without a technician. The first step to try: close water supply valve immediately. If that doesn't clear the code, work through the remaining steps in the "How to Fix" section above before assuming a part needs replacing.

Is it safe to keep using my dishwasher with code OE showing?

Urgent. Disconnect water and power before any further steps.

How much does it cost to repair OE on a LG Dishwasher?

Repair costs for code OE typically range from $20 to $200. Inlet valve: $35–$150; Float switch: $15–$50; PCB: up to $200. Costs on the low end usually reflect a DIY fix with no parts required, while the high end reflects a part replacement plus professional labor.

Estimated Repair Cost USD

$20 – $200

Inlet valve: $35–$150; Float switch: $15–$50; PCB: up to $200