Thermador Range Error Code F145

F145 on a Thermador range means the sensor inputs on the slave microcontroller have been detected as shorted together. This points to an electrical fault in the Power Board or the wiring connected to it. The slave micro is a secondary controller that monitors key sensor signals, and when its inputs short together, the range registers this fault code. The Power Board is the recommended starting point for diagnosis and repair.

Operating the range while F145 is active is not recommended. A shorted sensor input on the slave micro means the control system may not be receiving accurate feedback from key components, which could affect temperature regulation or safety monitoring functions. The range should be turned off and left unplugged until the fault is diagnosed and repaired.

Repair costs for an F145 error will vary depending on parts pricing and labor rates in your area. Power Board replacement parts for Thermador ranges typically fall in the range of $100 to $350 or more depending on the specific model. Adding professional labor, total repair costs can range from $200 to $600 or higher. Getting a diagnostic estimate from a certified Thermador technician before committing to the repair is a good approach.

A knowledgeable DIYer with experience working on appliance electronics can attempt this repair, but it does involve working near high-voltage components inside the range. The primary repair step is locating and replacing the Power Board. If you are not comfortable working with appliance electronics or disconnecting and reconnecting wiring harnesses, a qualified technician is the safer option.

Resetting the range by disconnecting power for several minutes may temporarily clear the F145 code, but it is very likely to return if the underlying electrical fault has not been corrected. A reset does not repair a shorted input condition on the Power Board or wiring harness. The fault needs to be physically diagnosed and the faulty component replaced to resolve the error permanently.