Thermador Range Error Code Er:04

Er:04 on a Thermador range indicates a door actuation defect in the WFR 2460 washer system. The control board has detected that the door actuator failed to complete its expected locking or unlocking cycle. This can be caused by a failed actuator, wiring fault, mechanical obstruction, or a damaged latch assembly. The appliance will not operate normally until the fault is resolved.

You should not continue using the range while Er:04 is active. The error indicates the door latching system is not functioning correctly, which could mean the door is not securing properly during operation. Using the appliance in this condition is not safe and could also cause further damage to the door mechanism or control system.

A power reset by unplugging the range or switching off the circuit breaker for a few minutes may temporarily clear the error code. However, if the underlying door actuation fault is still present, the code will return once the appliance attempts to operate the door mechanism again. A reset is useful for confirming whether the fault is intermittent, but it does not repair the root cause.

Some causes of Er:04 can be addressed without professional help, such as clearing a mechanical obstruction from the door latch area or reseating a loose wiring connector. However, replacing the door actuator or latch assembly requires disassembly and comfort working with appliance components. If you are not confident in appliance repair work, a qualified technician is recommended.

Repair costs for Er:04 will vary depending on the failed component and whether you use a professional technician. A door actuator or latch assembly part typically ranges from around $50 to $200 or more depending on availability. Adding labor from a certified technician, total repair costs commonly fall in the range of $150 to $450. A diagnostic visit will help pinpoint the exact cause before committing to parts.