What does Samsung Dishwasher Smells Bad - Causes & Fix mean?

Usually food debris and grease in the filter or drain area. Clean the filter, drain, and door seal, then run an empty cycle with vinegar.

How do I fix Samsung Dishwasher Smells Bad - Causes & Fix?

Follow the step-by-step diagnosis below. The most likely fix is identified by checking power, sensor resistance, and control-board signals in order — using a multimeter and the part numbers documented in the parts reference table.

Can I keep running the equipment with this fault active?

Generally no. Faults on Appliance units are emitted when a sensor, safety, or control circuit is outside its operating envelope. Running through an active fault risks compressor, heater, or control-board damage. Diagnose and clear the fault first.

What part is most commonly replaced for Samsung Dishwasher Smells Bad - Causes & Fix?

The most frequently replaced parts for Samsung Dishwasher Smells Bad - Causes & Fix are listed in the Parts Reference section of this guide with OEM part numbers and typical price ranges. Check the table for direct replacements.

Is Samsung Dishwasher Smells Bad - Causes & Fix a DIY repair or do I need a technician?

Sensor swaps, fan motor replacements, and condenser cleaning are typical DIY-level repairs. Anything involving refrigerant, gas, or high-voltage (>240V) work requires a licensed technician for both safety and code-compliance reasons.

Samsung Dishwasher Smells Bad - Causes & Fix

Samsung Dishwasher Smells Bad — What’s Happening

Samsung describes this as the dishwasher “stinks or has a musty smell” and treats it as a cleaning and maintenance issue rather than a diagnostic fault code. The odor typically comes from food debris, grease, mold, or stagnant water collecting in the filter, drain area, spray nozzles, or door seal.

Samsung also points to dirty dishes left sitting in the tub before a wash cycle, poor hot water supply, and residue buildup on removable parts as common contributors. If the smell is like rotten eggs or sulfur, the cause is often trapped food in the drain path or sink connections like the garbage disposal or air gap.

Jump to Fix

Most Likely Causes

Food particles and grease in the filter or drain area Trapped debris in the filter housing, sump, or bottom of the tub is the most common source of bad odors in Samsung dishwashers.
Mold or musty buildup around the door seal The rubber gasket and lower door edge collect moisture and residue, which can grow mold and produce a musty smell.
Standing water or poor drainage Water that does not fully drain after a cycle allows bacteria to grow and create odor in the sump and drain path.
Clogged spray nozzles Food particles and mineral deposits can block the spray arm holes, trapping organic material that begins to decompose and smell.
Dirty dishes left inside before running a cycle Samsung specifically calls out storing unwashed dishes in the tub as a contributor to odor buildup in the interior.
Hot water arriving too slowly at the dishwasher If hot water takes more than about a minute to reach the sink, the dishwasher may not rinse properly and leave residue that turns foul.
Trapped food in the garbage disposal or air gap connection Decomposing food in the sink drain path or air gap can produce a sulfur or sewer-like smell that backs into the dishwasher.

How to Diagnose and Fix

Confirm the odor type and inspect the tub, filter area, drain path, and door seal for visible residue, standing water, or mold.
Remove the lower rack and pull out the filter assembly, then clean the filter and filter housing with warm soapy water to remove trapped food and grease.
Wipe down the bottom of the tub, the drain area, and the sump with a damp cloth to clear any debris or slime buildup.
Check the spray arm nozzles for clogs and clear each hole with a toothpick or thin pointed tool to remove food particles and mineral deposits.
Wipe the door seal and lower door edge with a damp cloth and white vinegar or warm soapy water to remove mold and residue.
Run the dishwasher empty with 8 ounces of white vinegar in a dishwasher-safe glass on the bottom rack, or use a chlorine-based cleaner or dishwasher cleaning tablet (do not mix detergent and vinegar in the same cycle).
Run hot water at the kitchen sink and time how long it takes to get hot. If it takes more than about a minute, check the water heater setpoint and verify it is between 120°F and 149°F.
If the odor is sulfur-like or sewer-like, inspect the garbage disposal and air gap at the sink for trapped food, and clear or flush the drain path as needed.

Parts You Might Need

Part	Notes
Door gasket (door seal)	Amazon \| Replace if damaged or mold-contaminated beyond cleaning
White vinegar (8 oz)	Amazon \| For cleaning cycle, placed in dishwasher-safe glass on bottom rack
Dishwasher cleaning tablet or chlorine-based cleaner	Amazon \| Alternative to vinegar for deep cleaning cycle (do not use both together)

If your appliance also shows a code on the display, these match this problem:

When to Call a Pro

Call a technician if the odor persists after cleaning the filter, drain area, seal, and spray nozzles and running a vinegar or cleaner cycle. A pro can inspect for drainage blockages in the pump or drain hose, check for a faulty drain valve or clogged sump, and verify that the hot water supply and plumbing connections are working correctly. If standing water remains in the tub after a cycle or the smell is sewer gas entering through the drain line, a professional can diagnose and repair the underlying drainage or venting issue.