Thermador Range Error Code d:12

The d:12 code indicates that the WFMC motor control circuit detected a high current condition and shut off the motor to prevent damage. This overcurrent shutoff is triggered when the motor is overloaded or mechanically binding. The appliance is protecting itself from a potentially damaging electrical condition in the motor circuit.

You should not continue operating the affected motor function while the d:12 fault is active. The error indicates an overcurrent condition that, if repeatedly stressed, can damage the motor, control board, or wiring. Continued use risks escalating a correctable fault into a more expensive failure.

Repair costs vary depending on the root cause. Clearing a mechanical obstruction may involve only a service call fee, typically in the range of $80 to $150. Replacing a failed motor can cost $150 to $400 or more including parts and labor, and a motor control board replacement can range from $200 to $500 depending on the specific board and labor rates in your area.

Some causes, such as a physical obstruction jamming the motor's mechanical load, may be accessible to a knowledgeable DIYer willing to inspect and clear the blockage. However, diagnosing motor winding failure, bearing seizure, or control board faults requires electrical testing equipment and disassembly of internal components. If you are not comfortable working with appliance electrical systems, a qualified technician is the safer choice.

A power reset may temporarily clear the error code, but if the underlying cause is still present, the fault will return as soon as the motor is activated again. Resetting without addressing the root cause, whether a mechanical obstruction, worn motor, or wiring issue, does not resolve the problem and can allow further damage to accumulate.