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Error code reference

Thermador Range Error Code F10

Power board incompatibility (C/CM/CJ ovens) or open oven sensor (Gaggenau/Steam oven).

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What the F10 error code actually means

Your Thermador oven has detected a communication problem between its internal circuit boards, or in some models, a failure in the temperature sensor that monitors the oven cavity. The oven cannot confirm it is operating safely, so it has stopped and displayed this error. A technician will need to inspect the wiring and boards, or test and replace the temperature sensor depending on your specific model.

Diagnostic procedure

The full F10 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check all connections between the power/relay board and the control display PCB. If OK, replace power/relay board.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of F10

Ranked by how often they cause this code
  1. 1Loose or damaged wiring harness between boards
  2. 2Failed power/relay board
  3. 3Open or failed oven temperature sensor (Gaggenau/Steam models)
  4. 4Broken sensor wiring or connector (Gaggenau/Steam models)
  5. 5Mismatched or incompatible replacement board

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Questions people ask about F10

What does F10 mean on a Thermador range?
F10 on a Thermador range indicates either a power board incompatibility on C, CM, and CJ series ovens, or an open oven temperature sensor circuit on Gaggenau and Steam oven models. On C/CM/CJ models, the control display PCB and power/relay board are not communicating correctly. On Gaggenau and Steam models, the oven temperature sensor circuit has failed or is broken, preventing the oven from reading cavity temperature.
Is it safe to use my Thermador oven when F10 is displayed?
No, you should not attempt to operate the oven while F10 is active. The error indicates the control system cannot properly monitor or communicate with critical components. Continuing to use the oven under these conditions could lead to unsafe operating temperatures or unpredictable behavior. Leave the oven off until the fault is diagnosed and resolved.
How much does it cost to repair an F10 error on a Thermador range?
Repair costs vary depending on whether the issue is a wiring connection, a temperature sensor, or a power/relay board. A temperature sensor replacement is typically the least expensive component fix, often falling in the range of $50 to $150 for the part alone. A power/relay board replacement can range from $150 to $400 or more for the part, plus labor. Total repair costs including a technician service call generally range from $200 to $600 depending on the fault and your location.
Can I fix an F10 error on my Thermador oven myself?
Some steps are accessible to a knowledgeable DIYer. You can inspect and reseat the wiring connectors between the power/relay board and the control display PCB on C/CM/CJ models, or use a multimeter to test the oven temperature sensor resistance on Gaggenau and Steam models. However, if a board or sensor replacement is needed, comfort with appliance disassembly and working near electrical components is required. When in doubt, a qualified technician should handle the repair.
Will resetting the oven clear the F10 error code?
A power reset, such as switching off the circuit breaker for 30 seconds and restoring power, may temporarily clear the F10 code. However, if the underlying cause is a failed sensor, a faulty board, or a wiring problem, the error will return as soon as the oven attempts to operate. A reset is useful for confirming whether the fault is intermittent, but it is not a repair.

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