Dishwasher has a chemical or burning plastic smell

Symptoms

• Sharp, acrid, or burning plastic odor rather than musty
• Smell noticeable during the cycle, especially the heat/dry phase
• Smell fades after airing out versus persisting
• Unit is brand new or was recently repaired

Likely causes

• CommonNew dishwasher factory smellNew units often have a mild plastic or chemical smell for the first several cycles that fades on its own.
• CommonItem near the heating element melting slightlyA shifted plastic item touching the element can create a burning plastic smell.
• PossibleWiring or electrical component overheatingAn overheating wire or connection is a more serious cause and warrants caution.
• Less commonMotor or pump bearing overheatingA struggling motor can occasionally produce a hot, burning smell under stress.

What to do

1. If the smell is sharp and chemical rather than musty, stop the cycle and check inside for any plastic item touching the heating element.
2. Unplug the dishwasher and let it cool fully before inspecting further if you suspect anything overheating.
3. For a brand-new dishwasher, run a couple of empty cycles, which often clears the initial factory smell.
4. Check for any visible melted plastic or discoloration on the tub floor or heating element.
5. If you smell anything like burning wires or see any scorch marks, do not run the unit again until it's inspected.
6. Have a technician inspect the wiring and motor if the burning smell continues with no plastic item as the cause.

Tools and parts

• Flashlight

When to call a pro

If there's any sign of electrical burning rather than melted plastic, unplug the unit and call an appliance technician before using it again.

Safety