Smoke can come from hidden grease, foil/liner contact, manufacturing residue, cleaner residue or a failing electrical component. The odor and timing determine whether continued use is safe. With the oven cool, look at the back, under the element and in the door channel with a flashlight.
What this covers
- Ranges & ovens · smoke
What it does not cover
Differential
Likely causes of “Oven smokes even when it looks clean”, and how to tell them apart
- 1
Hidden grease on the floor, walls or the element is burning
What separates it Smoke starts as the oven heats and has a greasy smell, though the cavity looks clean from the front.
How to confirm With the oven cool, look at the back, under the element and in the door channel with a flashlight.
- 2
A liner, foil or cookware is touching the elements
What separates it Smoke appears at one spot and burnt material or a melted liner is visible when cool.
How to confirm Remove foil, liners and anything the manual prohibits and check the element surface.
- 3
New-oven residue or cleaner left behind is burning off
What separates it A chemical smell in the first uses, or shortly after a cleaner was sprayed inside.
How to confirm Ventilate the room and run the maker's specified burn-in or empty bake.
- 4
A failing electrical component is overheating
What separates it A sharp, electrical or plastic smell, or smoke rising from the controls, vents or wiring.
How to confirm This is a stop condition; do not run the oven to test it.
Before you touch a setting
Record this first — changing settings destroys the evidence
- The color and smell of the smoke and where it starts.
- Whether it begins before the oven heats or only once it is hot.
- What was cooked last and whether any liner or foil was used.
Try in this order
0 of 4 completedObserve before changing anything
ReversibleTurn the oven off and note color, odor, location and whether smoke starts before heating.
Isolate the failing boundary
ReversibleAfter cooling and disconnecting as directed, remove prohibited liners and clean approved surfaces and spills.
Apply the narrow correction
ReversibleVentilate and run only the manufacturer’s specified burn-in or test procedure.
Verify the result and stop at the boundary
ReversibleStop for electrical odor, sparks, flames or smoke from controls or wiring.
Stop boundary
When this stops being a self-service repair
- !Stop for an electrical odor, sparks, flames, or smoke from the controls or wiring.
- !Ventilate the kitchen and never leave a smoking oven unattended.
Evidence ledger
Sources behind this answer
Exact questions
Common questions
Is some smoke normal in a new oven?+
A short burn-off smell can be normal, but keep the room ventilated and follow the maker's break-in instructions. Continued smoke means residue or a fault.
Why does a clean oven smoke?+
Hidden grease, foil touching elements or new-oven residue can burn.
How do I burn off residue?+
Ventilate and run a self-clean or high heat cycle as the manual allows.