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Thermador·Oven / Rangehigh severity
Thermador Oven / Range Error Code F2
Oven over-temperature (runaway heat)
Common Causes
- 1Bake or broil relay welded closed
- 2Temperature sensor drifted low
- 3Control board logic fault
F2 is a fire-risk safety code. Do not restore power until the welded relay or faulty sensor is identified — the element will re-energize immediately on a naive reset.
Step-by-Step Troubleshooting
- 1
Shut the range breaker immediately and let the cavity cool fully before opening anything, because F2 means the control read heat beyond the safe ceiling
- 2
With power off, inspect the bake and broil relays on the control board for welded contacts that keep an element energized regardless of command
- 3
Measure the oven RTD sensor at the connector — it should read near eleven hundred ohms at room temperature, and a low reading fools the board into over-firing
- 4
If both the relays and the sensor test in-band, the control logic itself has failed and the board must be replaced
Pro Diagnostic Tip
A welded bake relay re-energizes the element the instant power is restored, so never simply reset an F2 and walk away — the Thermador safety cut fired for a reason and the welded relay or drifted sensor must be found first.
You Might Also Notice
- •Oven climbs well past the set temperature
- •Self-clean will not shut off on schedule
- •Burning odor from the cavity
- •Smoke during ordinary baking
Parts, Cost & Difficulty
Repair Difficulty
Professional OnlyEstimated Repair Cost
$300–$560
Parts + labor. Free diagnosis with repair.
Parts That May Need Replacement
Main control boardOven temperature sensor (RTD probe)
Do You Have the Right Tools?
Combustion analyzer ($300), igniter tester ($120), temperature calibrator ($150), and gas pressure manometer. Our technician arrives with $3,000+ in professional tools — your diagnostic is free.
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Gas ovens involve live gas lines — a loose connection creates explosion and carbon monoxide risk. Electric ovens run on 240V circuits. Our techs are licensed and insured — let them handle the risk.
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Error code F2 is a high-severity issue that can cause further damage to your oven / range if left unresolved. A licensed technician can diagnose and fix it the same day.
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Frequently Asked Questions
What does Thermador error code F2 mean?
Thermador error code F2 indicates: Oven over-temperature (runaway heat). This is a high-severity issue affecting your oven / range.
How do I fix Thermador error code F2?
Shut the range breaker immediately and let the cavity cool fully before opening anything, because F2 means the control read heat beyond the safe ceiling Then, With power off, inspect the bake and broil relays on the control board for welded contacts that keep an element energized regardless of command Then, Measure the oven RTD sensor at the connector — it should read near eleven hundred ohms at room temperature, and a low reading fools the board into over-firing There are 1 more steps — see the full troubleshooting guide above. This repair typically requires professional tools and expertise.
How do I know if my oven / range has error F2?
Besides the error code on the display, common signs include: Oven climbs well past the set temperature; Self-clean will not shut off on schedule; Burning odor from the cavity. If you notice any of these symptoms, check your oven / range's display panel for error code F2.
How much does it cost to fix Thermador F2?
Repair costs for Thermador F2 typically range from $300 to $560 depending on the specific cause and parts needed. EasyBear offers free diagnosis when you proceed with the repair. Call (415) 795-7300 for a same-day appointment.
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