Direct answer
Many ovens signal before the entire cavity and cookware reach equilibrium. Compare temperature only after the manual’s full preheat and several heat cycles.
What this covers
- Ranges & ovens · temperature
- The exact symptom in the title before component-level repair
- Consumer-accessible controls, connections and maintenance areas
What it does not cover
- ×Smoke, burning odor, swelling, liquid on powered parts or damaged wiring
- ×Opening sealed panels, bypassing interlocks or live-electrical testing
- ×Account ownership, billing or warranty disputes
Observe before changing anything
ReversibleUse a reliable thermometer centered in an empty oven and record multiple peaks and lows, not one instant reading.
Isolate the failing boundary
ReversibleCompare Bake with convection, rack position, door opening and supply voltage or gas ignition behavior.
Apply the narrow correction
ReversibleAllow full preheat and apply only the documented calibration offset within its allowed range.
Verify the result and stop at the boundary
ReversibleService is appropriate for large, unstable errors, failed ignition or temperatures that keep falling.
Evidence ledger
Sources behind this answer
Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.
Exact questions
Common follow-ups
What should I check first for “Oven says it is preheated but the temperature is still low”?+
Use a reliable thermometer centered in an empty oven and record multiple peaks and lows, not one instant reading.
How do I know whether the problem is external or inside the device?+
Compare Bake with convection, rack position, door opening and supply voltage or gas ignition behavior.
When should I stop and request repair?+
Service is appropriate for large, unstable errors, failed ignition or temperatures that keep falling.
Answer for the exact device and software version shown above.