Thermador Range Error Code d:06

The d:06 code indicates a fault in the WFMC motor control module involving the NTC relay circuit. It activates when the NTC thermistor reports an excessively high temperature or when the associated relay is detected as stuck in the closed position. Both conditions prevent the motor control from operating safely, so the range shuts down and displays the fault. A technician will need to test the thermistor and relay to determine which component has failed.

A d:06 fault indicates a potential thermal or relay control failure inside the motor control module, which can pose a safety risk if the range is operated. A stuck-closed relay in particular means a circuit may remain energized when it should not be. It is strongly recommended to stop using the range and unplug it or disconnect the circuit breaker until the fault is properly diagnosed and repaired.

Power cycling the range by unplugging it or turning off the circuit breaker for several minutes may temporarily clear the d:06 code, but if the underlying fault in the NTC thermistor or relay has not been resolved, the error will return during operation. A reset does not repair a failed component. The fault should be properly diagnosed and the defective part replaced to achieve a lasting repair.

Some preliminary checks, such as inspecting wiring connectors and verifying there are no ventilation obstructions, can be performed without specialized tools. However, accurately testing the NTC thermistor resistance and evaluating relay function on the motor control board requires a multimeter and familiarity with appliance electrical systems. If the motor control board itself has failed, replacement involves working with line voltage components, which carries serious safety risks and is best handled by a qualified technician.

Repair costs vary depending on which component has failed. If only the NTC thermistor requires replacement, costs are generally lower, typically in the range of $100 to $250 including parts and labor. If the full WFMC motor control board needs to be replaced, costs can range from $300 to $600 or more depending on parts pricing and labor rates in your area. Obtaining a diagnostic visit from a certified technician will give you an accurate estimate for your specific situation.