Narrow it down
What this symptom can tell you
The smell is stale food or musty
Food debris, standing water, a dirty filter, or moisture on owner-cleanable surfaces may be involved.
The smell resembles a sink or sewer
The drain hose, air gap, disposal connection, or household plumbing may be allowing odour or backflow.
The smell is hot plastic, electrical, or burning
Stop the cycle and arrange service. Do not try to cover the smell with a cleaning product.
These patterns narrow the next check; they do not confirm a failed part. Use the exact model number and any displayed code before ordering parts or authorizing repair.
Try these checks in order
Controls, access points, and normal behaviour differ by model. Stop when a step does not match your appliance or official manual.
- 1
Remove visible food debris
With the appliance off, check the tub bottom, rack tracks, door edges, and owner-accessible filter area.
What you want: A clear result without opening the appliance or bypassing a safety system. - 2
Clean the filter correctly
Follow the exact model manual. Some filters are removable and washable; others are maintenance-free and should not be forced out.
What you want: A clear result without opening the appliance or bypassing a safety system. - 3
Check for standing water
A small amount near the sump may be normal, but a pool across the tub floor points to a drain problem.
What you want: A clear result without opening the appliance or bypassing a safety system. - 4
Clean the door seal and interior
Use warm water and a soft cloth, then run the manufacturer-recommended cleaning cycle. Never mix bleach, vinegar, or other chemicals.
What you want: A clear result without opening the appliance or bypassing a safety system. - 5
Use a rinse cycle between loads
When dirty dishes will sit for a while, use Rinse or Rinse Only if the model provides it.
What you want: A clear result without opening the appliance or bypassing a safety system.
Most common categories
Possible causes to consider
- Food debris in an owner-removable filter or around the door edge.
- Standing water caused by incomplete drainage.
- A drain hose installation or nearby plumbing problem.
- Long periods with the door closed and damp surfaces inside.
- An overheating component or foreign object when the odor is hot or burning.
Stop and arrange help when
- The odor is electrical, burning, melting plastic, or accompanied by smoke.
- Sewage odor is also present at the sink or household drain.
- Water backs up from the sink into the dishwasher.
- The filter or drain path requires removing fixed panels.
If the problem remains
Record the exact model, symptom, any code, and the checks completed. Use the official manual and recall search before authorizing service.
Outcome check
Did these checks resolve the problem?
Your answer helps identify which guides need improvement. No appliance details are submitted.
Common questions
Dishwasher smells bad: FAQs
Can I use bleach to remove dishwasher odor?
Only if the exact dishwasher manual and material type permit it. Never mix bleach with vinegar, ammonia, or other cleaners.
Why does the dishwasher smell after the sink backs up?
A shared drain or disposal connection can allow dirty water or odor to move toward the dishwasher. Correct the plumbing and inspect the hose installation.
How often should the dishwasher filter be cleaned?
Use the interval and removal procedure in the model manual. Frequency depends on the filter design and how much debris enters the machine.
Source basis
This general guide was reviewed against official support and safety information. Your exact model manual controls.
See something unclear or incorrect?
Send the page link, appliance model, and the detail that needs review.