Thermador Range Error Code F16

F16 indicates that the catalyst sensor circuit is reading as open, meaning the control board is receiving no signal from the catalyst sensor. This applies specifically to Gaggenau EB 270, 271, 290, and 291 model ranges. The catalyst sensor monitors the catalytic cleaning element in the oven, and an open circuit prevents the oven from confirming that system is functioning. The fault is most commonly caused by a broken wire, a disconnected connector, or a failed sensor.

It is not recommended to continue using the oven while F16 is active. The control board cannot monitor the catalyst system properly without a functioning sensor, which means it cannot verify safe operation of the catalytic cleaning cycle. Standard baking may also be restricted depending on how the oven responds to the fault.

Repair costs vary depending on the root cause. If the fix involves reconnecting a loose wire or cleaning a corroded connector, the cost is primarily the labor charge, which typically ranges from $100 to $200 depending on your location and service provider. If the catalyst sensor itself needs replacement, parts and labor combined can range from $150 to $400 or more. A control board replacement would be at the higher end of repair costs.

A knowledgeable DIYer can perform basic diagnostics by checking the sensor wiring for visible damage and testing sensor resistance with a multimeter. At room temperature, the catalyst sensor should read approximately 500 ohms. If the wiring looks intact and the sensor resistance is correct, further diagnosis and repair typically requires a technician, as the issue may involve internal wiring or the control board.

Resetting the oven by cycling the power may temporarily clear the F16 code, but the fault will return if the underlying problem is not repaired. An open circuit in the catalyst sensor wiring or a failed sensor will continue to trigger the error on startup or during operation. A permanent fix requires identifying and repairing the faulty component.