Samsung Dishwasher LC Code: Find the Leak and Know When to Stop

The Samsung dishwasher LC code usually means the leak sensor has detected moisture in the dishwasher’s base. Stop the cycle, turn off power, and check for visible water or excess suds. Drying alone is not a repair: the source may be a leaking hose, seal, pump assembly, or oversudsing.

What does the LC warning actually mean?

On many Samsung dishwashers, LC indicates activation of the leak-detection system. Some models use a different warning, including LE, so confirm the meaning in your model’s manual. The sensor monitors the lower base area beneath the wash tub, not simply the water level inside the washing compartment.

When that system activates, the dishwasher may stop washing and run its drain pump continuously. The pump can keep running even when the tub looks empty. Water trapped in the base will not necessarily drain through the dishwasher’s normal drain hose.

A dry kitchen floor does not rule out a leak. A small amount of water can collect underneath the tub without escaping past the appliance. Conversely, an LC warning alone does not prove the sensor needs replacement.

What causes moisture to reach the leak sensor?

The timing of the warning helps narrow the possibilities. Water appearing during filling suggests a different source than water appearing during draining. Record what happened before the warning, but do not deliberately run a leaking machine to recreate the problem.

SymptomLikely causeDIY or pro?Foam in the tub or water near the doorHand soap, excess detergent, or spilled rinse aidDIY visual check; service if moisture or warning returnsWater at a front corner during washingDirty or damaged door seal, loading interference, or leveling problemDIY cleaning and loading check; pro for persistent leakageLeak during filling or while idleSupply connection, inlet valve, or internal fill-path leakShut off water; pro for internal partsWater appears during drainingLoose drain connection, damaged hose, or drain-pump sealDIY visual inspection under sink; pro for inaccessible partsWarning returns after the base driesUnresolved small leak or sensor/wiring faultPro diagnosisWarning after installation or movingPinched hose, disturbed connection, or spilled water in baseVisual check of accessible areas; installer or repair professional

Can detergent cause a leak warning?

Yes. Hand dish soap and soap residue on prewashed dishes can produce foam that escapes the normal wash area. Too much automatic-dishwasher detergent may also contribute, depending on water conditions. Spilled rinse aid can cause foaming, especially after filling the dispenser.

Twin Cities water hardness varies, and a home water softener changes detergent needs. Do not automatically increase detergent to fight cloudy dishes. Our article on hard water and dishwasher performance explains why mineral film needs a different approach.

What can you safely check when your Samsung dishwasher shows the LC code?

Disconnect electrical power before touching wet areas or cleaning parts. Turn off the dishwasher’s circuit breaker, or unplug it only when the plug is dry and safely reachable. The power button on the control panel does not disconnect electricity. If water is actively leaking, close the dishwasher’s water shutoff valve.

1. Take photos of the LC warning and any visible water. Record whether your Samsung dishwasher was filling, washing, or draining when the issue began. Locate its model number on the door or tub edge.
2. Look over the floor and cabinet beneath the sink. Check the dishwasher’s supply valve and accessible drain-hose connection for drips. Water from a sink or disposal can be mistaken for a dishwasher leak.
3. Look for excess foam. After disconnecting power, carefully open the door and examine the tub. Do not pour in vinegar, oil, or homemade defoaming remedies. Use your model’s instructions for handling detergent contamination.
4. Wipe the accessible door gasket. Remove food residue and debris with a soft, damp cloth. Check for torn, misshapen, or displaced sections. Leave fixed seals in place and do not adjust the hinges.
5. Review rack loading and spray-arm clearance. A large pan may obstruct the door or prevent a spray arm from moving freely. Clear the obstruction without forcing either the rack or the arm.
6. Examine the user-removable filter. Remove and clean it only if your manual allows it, then reinstall it properly. Wear gloves when handling debris, which may contain broken glass. Keep your hands out of pump openings.

Water remaining in the tub can point to a separate drainage issue. Refer to our dishwasher drainage troubleshooting steps, but keep in mind that cleaning a filter neither dries moisture beneath the tub nor confirms that a leak has been repaired.

Do not slide out or tip your Samsung dishwasher to empty water from the base. Doing so may send water onto electrical parts, put strain on hoses, and conceal clues to the leak’s source. When water is present, leave toe-kick removal and access to internal components to a professional.

Dishwashers generally run on 120V power, while nearby ranges may have hazardous 240V connections. Do not move appliances that are still connected or open electrical panels. Avoid disturbing neighboring gas lines or refrigerant tubing. If you suspect a gas leak, evacuate and call the gas utility from outside.

Will drying or resetting the dishwasher fix it?

Drying may clear the warning if moisture was the trigger, but it does not explain why that moisture appeared. A leaking pump seal or hose can wet the sensor again during the next cycle. Repeated resets can allow additional cabinet or floor damage.

Follow any reset procedure specified in your model’s manual only after the cause has been addressed. Do not bypass the sensor, disconnect its wiring, or keep restarting the machine to finish a load. If the warning remains or returns, leave power and water off pending diagnosis.

When should you call a pro for a Samsung dishwasher LC code?

Schedule Samsung dishwasher repair if you find water under the unit, the LC code keeps returning, a seal is damaged, or you cannot locate an obvious, accessible cause. Stop immediately if you notice a burning smell, tripped breakers, or wet electrical connections; do not try running another cycle.

A technician can check the inlet valve, circulation-pump and sump seals, drain pump, hoses, and sensor connections. Testing under controlled conditions helps determine whether the LC warning comes from a water leak or a sensor or wiring problem before parts are replaced.

Central Minnesota Appliance Repair charges a $149 residential trip/diagnostic fee, which is credited or waived when you approve the repair. Repairs come with a one-year written parts-and-labor warranty. Technicians are factory-trained and EPA 608 certified. Read our dishwasher repair cost information for broader factors that affect cost.

Same-day service is often available within the core metro, though it is never guaranteed. Request a dishwasher diagnosis or call 651-364-7466. Share your dishwasher's model number, the warning displayed, and any photos showing visible leakage.

Frequently asked questions

Can I keep using the dishwasher with an LC warning?

No. Stop using it until the moisture source is understood and corrected. The warning may involve water near electrical components, even if the floor is dry. Repeatedly clearing it can allow a small leak to damage cabinetry or flooring. Turn off power and close the water supply if leakage is present.

Why does the drain pump run when the tub is empty?

The leak-protection system may command the drain pump to run after detecting moisture in the base. An empty wash tub does not mean the lower base is dry. Do not assume the running pump itself has failed; the technician needs to identify what is activating the protective response.

Does an LC warning mean the leak sensor is bad?

Not necessarily. The sensor may be responding correctly to a small leak or excess suds. Replacing it without checking the base, hoses, and pump seals can leave the original problem unresolved. A sensor or wiring fault becomes a stronger possibility only after actual moisture and its source have been investigated.

Can an installation problem trigger the warning?

Yes. A disturbed supply connection, damaged drain hose, or installation-related leak can introduce moisture beneath the tub. If the warning started immediately after installation, shut off power and water and contact the installer or a repair professional. Avoid pulling the machine out yourself, which can worsen a strained connection.