Samsung · Dishwasher

LC

Leak Detected by Moisture Sensor

Severity

High

Your Samsung Dishwasher stopped working and is showing error LC, which corresponds to a fault called "Leak Detected by Moisture Sensor". This is one of the most searched error codes for this appliance — you are not alone, and there is a clear fix.

Owner's Summary

LC is similar to LE — the moisture sensor in the base detected water. Sometimes this is caused by condensation or a tiny slow drip that has accumulated over time rather than an active flood. Drying the base pan and cleaning the door seal often resolves LC without replacing any parts.

Symptoms

Samsung dishwasher stopping immediately at start, LC code, no visible leak

Common Causes

Condensation on moisture sensor in base pan
Small leak dripping into base over time
Damaged tub gasket causing slow seep
Steam escaping past door seal into base area

How to Fix

1 Open the kick plate and inspect the base pan for moisture
2 Dry the base pan thoroughly with towels or a hair dryer on low
3 Check door gasket condition and clean the door seal channel
4 Run a diagnostic cycle while watching for active drips
5 Replace door gasket or faulty internal hose if active leak found

Tools You'll Need

Screwdriver Set Pliers Towels / Bucket Flashlight Replacement Gasket

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

Samsung uses a moisture-sensitive resistive sensor in the base pan that changes resistance when wet. The PCB reads this resistance continuously — when it drops below the wet threshold, LC is posted immediately. Unlike a float switch, this sensor can trigger from condensation alone.

Is It Safe to Keep Using?

Address within a day. If the sensor is triggering from condensation, the issue is typically cosmetic. If from an active leak, water damage risk is real.

Technician's Pro Tip

LC from condensation is common in newly installed machines or in humid climates. After drying the base pan, run the machine with the kick plate removed and watch for 10 minutes — if LC returns, there is an active drip. If not, condensation was the cause.

Related Codes

E2 — Samsung Washing Machine

Water Supply Error

High

4E — Samsung Washing Machine

No Water Supply Detected

High

5E — Samsung Washing Machine

Drain Error — Water Not Draining

High

Frequently Asked Questions

What does error code LC mean on a Samsung Dishwasher?

Code LC on a Samsung Dishwasher indicates "Leak Detected by Moisture Sensor." In practice, the most common trigger is condensation on moisture sensor in base pan. Severity is rated high, and typical repair costs range from $0 to $250.

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

Many cases of LC can be resolved without a technician. The first step to try: open the kick plate and inspect the base pan for moisture. 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 LC showing?

Address within a day. If the sensor is triggering from condensation, the issue is typically cosmetic. If from an active leak, water damage risk is real.

How much does it cost to repair LC on a Samsung Dishwasher?

Repair costs for code LC typically range from $0 to $250. Drying and inspection: $0; Door gasket: $15–$60; Internal hose: $20–$100. 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

$0 – $250

Drying and inspection: $0; Door gasket: $15–$60; Internal hose: $20–$100