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Quick answer
A smelly dishwasher after cleaning is often due to hidden mold or trapped food. Check the drain, filter, and gasket. Replace parts if needed.
Confirm the symptom
- Dishwasher has a foul odor after cleaning
- Smell persists even after running a cleaning cycle
- Dishes smell bad after a wash cycle
Tools and prep
- Rubber gloves
- Plastic scraper
- White vinegar or baking soda
- Soft brush
- Towel
- Screwdriver (if needed)
Step-by-step troubleshooting
- Check Drain and FilterDo: Remove the drain filter and clean it with a brush and vinegar or baking soda.Observe: Filter is clogged with food particles or mold.Means: Clogged filter is causing bad smell.Next: Clean the filter thoroughly and reinstall.
- Inspect the GasketDo: Check the rubber gasket around the door for mold or debris.Observe: Mold or grime is present on the gasket.Means: Mold in the gasket is causing the smell.Next: Clean the gasket with a vinegar solution and dry it thoroughly.
- Clean the Detergent DispenserDo: Remove the detergent dispenser and soak it in warm, soapy water.Observe: Residue or mold is inside the dispenser.Means: Old detergent or mold is causing the odor.Next: Clean the dispenser and let it dry before reattaching.
- Check for Standing WaterDo: Look under the dishwasher for standing water.Observe: Water is pooled at the bottom or in the drain area.Means: Standing water is leading to mold growth.Next: Dry the area and ensure the drain is clear.
- Run a Vinegar CycleDo: Place a cup of white vinegar in a dishwasher-safe container on the top rack and run a hot water cycle.Observe: The vinegar neutralizes odors and removes buildup.Means: Vinegar helps eliminate lingering smells and buildup.Next: Wipe down the interior after the cycle.
- Inspect the Air Gap (if applicable)Do: Check the air gap on the countertop for clogs.Observe: Food particles or debris are blocking the air gap.Means: Clogged air gap prevents proper drainage and causes odors.Next: Clean the air gap with a brush and water.
Common causes
| Cause | Likelihood | Difficulty | Part often needed |
|---|---|---|---|
| Clogged Drain Filter Food particles and mold accumulate in the filter, causing odors. | Common | Easy | Drain Filter |
| Mold in the Gasket Moisture trapped in the gasket promotes mold growth. | Common | Easy | Gasket |
| Standing Water Water trapped in the bottom of the dishwasher leads to mold. | Common | Easy | Drain Pump |
| Clogged Air Gap Blocked air gap prevents proper drainage and causes odors. | Sometimes | Easy | Air Gap |
| Old Detergent in Dispenser Stale detergent can develop a foul smell over time. | Sometimes | Easy | Detergent Dispenser |
| Faulty Drain Pump A malfunctioning pump can leave water trapped inside. | Rare | Medium | Drain Pump |
Parts matching
If cleaning doesn't help, you may need to replace these parts:
- Drain Filter – Replace if clogged or damaged.
- Gasket – Replace if moldy or cracked.
- Detergent Dispenser – Replace if moldy or not functioning.
- Air Gap – Replace if clogged or damaged.
- Drain Pump – Replace if faulty and causing water to remain.
Purchase OEM parts for compatibility and longevity.
When to call a professional
- Smell persists after replacing all accessible parts
- Dishwasher leaks or doesn't drain properly
- You hear unusual noises during operation
- Standing water remains after multiple attempts to clear it
FAQ
Can I use bleach to clean my dishwasher?
Avoid bleach as it can damage rubber parts. Use vinegar or baking soda instead.
How often should I clean the dishwasher filter?
Clean the filter at least once a month to prevent buildup.
Why does my dishwasher smell like rotten eggs?
A rotten egg smell often indicates a drain issue or mold growth.
Will running a hot water cycle help with the smell?
Yes, a hot water cycle with vinegar can help eliminate odors and buildup.
Can a clogged air gap cause bad smells?
Yes, a clogged air gap can prevent proper drainage and lead to odors.