Error Code
Thermador Oven E15 Error Code
E15 on a Thermador oven is generally linked to a possible temperature-sensing problem. This guide gives a plain-language overview, the symptoms you might notice, safe checks you can perform, and when it is best to call a technician — with a reminder that exact behavior varies by model.
Reviewed by Daniel Reeves · Last reviewed August 18, 2026
Error guide
Code overview
Quick answer — E15 — commonly associated with a temperature-sensor issue on a Thermador oven. Meaning can vary by model; verify before relying on it.
On many Thermador oven models, the E15 code is commonly associated with a possible temperature-sensing problem. The exact meaning can differ between appliance series and model years, so treat this as general guidance and confirm it against your specific model’s documentation before acting.
Model note: ASKO reuses codes across series and model years, so E15 may mean something different on another appliance or generation. Confirm against your model’s documentation and record the full model number before acting.
- Error code: E15
- Appliance: Oven
What to look for
Symptoms you may notice
These are the signs homeowners often see when E15 appears on an ASKO appliance.
- The oven displays E15 and temperatures seem off
- E15 appears intermittently during operation
- The oven behaves inconsistently with E15 shown
Why it happens
Possible causes
Exact meaning can vary by model — treat these as common associations, not a final diagnosis.
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A temperature sensor reading out of range
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A wiring or connection issue to the sensor
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A control interpreting the reading as a fault
Before you call
Safe checks you can make
Simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
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Confirm nothing is blocking internal vents or airflow
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Note the actual behavior or temperatures if measurable
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Perform a manufacturer-approved restart
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Record the full model number before contacting a technician
Safety first
Important safety warning
Do not open internal panels, access high-voltage wiring, or bypass any safety device. If you ever smell gas, stop immediately, do not operate any switches, leave the area and contact your gas provider and a qualified technician. If you see smoke, sparks, a burning smell, or water near electrical parts, switch the appliance off at the outlet if it is safe to do so and call a professional.
Please avoid
What not to attempt
Get help
When to call a technician
If E15 persists after the safe checks above, or you are unsure at any point, book a diagnosis. A technician can confirm what E15 means on your specific model and resolve the underlying cause safely.
Likely related component:
Often related to the temperature sensor (NTC) (varies by model).
References
Sources & references
- Thermador appliance user manual — error/display messages section
FAQ
Frequently asked questions
Quick answers about E15, safe checks, and when to book a technician.
02 answers
You can safely try the basic checks above and a manufacturer-approved restart. If E15 returns, the underlying cause needs a proper diagnosis. Because the meaning can vary by model, confirm against your documentation.
Not necessarily. Thermador reuses codes across series and model years, and the exact meaning can differ. Record your full model number so the code can be interpreted correctly.
Book a repair
Tell us about your ASKO we’ll take it from there
Share your model and that you are seeing E15 — we’ll confirm an appointment. Prefer to talk? Call us and we’ll help right away.
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