Dishwasher Smell Like Sewer (Solved)

A dishwasher that emits a foul sewer-like odor can be both unpleasant and concerning.

This guide aims to help you identify the root causes of the problem and provides step-by-step troubleshooting solutions to eliminate the sewer-like smell from your dishwasher.

Before attempting any repairs, ensure your dishwasher is unplugged or disconnected from its power source to avoid accidents.

Dishwasher Smell Like Sewer (Solved)

Dishwasher smelling like the sewer is typically caused by food debris, clogged filters, and drainage problems.

So now we have answered the main question, let’s dive into troubleshooting.

Step 1: Check for Food Debris and Blockages

1.1. Remove any dishes, utensils, and racks from the dishwasher.

1.2. Inspect the dishwasher’s interior, particularly the drain area, for food debris or leftover food particles. Use a damp cloth to clean the interior thoroughly.

1.3. Remove the dishwasher’s filter and check for clogs or blockages. Clean the filter using warm, soapy water, and rinse it thoroughly before reinserting it.

Step 2: Clean the Drain Hose and Garbage Disposal

2.1. Locate the dishwasher’s drain hose, usually connected to the sink’s garbage disposal or a separate drain line.

2.2. Disconnect the drain hose from the garbage disposal or drain line carefully.

2.3. Gently run water through the hose to flush out any trapped debris or gunk. You can also use a pipe cleaner or a small brush to remove stubborn residue.

2.4. Check the garbage disposal for any food particles or blockages. Run water through it to ensure it drains properly.

Step 3: Inspect the Air Gap (if applicable)

3.1. If your dishwasher has an air gap installed, locate it, typically on the countertop near the sink.

3.2. Remove the air gap cover and inspect for debris or clogs. Clean it thoroughly using a mixture of equal parts white vinegar and water.

3.3. Run water through the air gap to ensure it is functioning correctly.

Step 4: Check for Clogs in the Drain Line

4.1. Locate the dishwasher’s drain line, which is usually connected to the garbage disposal or a separate drainpipe.

4.2. Carefully disconnect the drain line and inspect it for clogs or blockages.

4.3. Use a long, flexible brush or a plumber’s snake to remove any obstructions from the drain line.

4.4. Reconnect the drain line securely.

Step 5: Clean and Deodorize the Dishwasher

5.1. Run an empty dishwasher cycle with hot water and add two cups of white vinegar to the bottom of the dishwasher. The vinegar will help remove any lingering smells and disinfect the interior.

5.2. After the vinegar cycle, sprinkle one cup of baking soda across the bottom of the dishwasher and run another empty cycle with hot water. Baking soda acts as a natural deodorizer.

5.3. For added freshness, place a dishwasher-safe bowl filled with a few tablespoons of lemon juice or baking soda on the top rack and run a short cycle.

Step 6: Regular Maintenance

6.1. To prevent future smells, make it a habit to scrape off excess food from dishes before loading them into the dishwasher.

6.2. Clean the dishwasher filter and drain area regularly, ideally once a month or as needed. 6.3. Run an empty dishwasher cycle with vinegar and baking soda every few months to keep it fresh and clean.

Final Thoughts

Food debris, clogged filters, and drainage issues are the most common causes of dishwasher odours.

By following this troubleshooting guide and performing regular maintenance, you should be able to eliminate the sewer-like smell from your dishwasher.

If the issue persists despite your efforts, it may be best to consult a professional appliance repair technician to identify any underlying problems with your dishwasher.

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