Miele Washer Error Code F4150

F4150 indicates that after the emergency door release procedure was used to stop the program and open the door, the door was detected as closed again under conditions the control system did not expect. The fault also flags intermittent contact problems in the door lock circuit. The machine halts operation as a safety precaution until the issue is resolved.

You should not continue running wash cycles while F4150 is active. The fault indicates the door lock circuit is producing unreliable signals, which means the machine cannot confirm the door is securely latched during operation. Running a spin or wash cycle under these conditions poses a risk of the door opening unexpectedly.

Repair costs depend on what is found during diagnosis. If the fix involves reseating a connector or performing a reset, the cost may be limited to a service call fee, generally in the range of $75 to $150. If the door lock assembly requires replacement, parts and labor combined typically fall in the range of $150 to $350, depending on your location and the specific model.

In some cases, performing a proper control reset after using the emergency door release will clear the fault if no physical contact problem exists. However, if the fault returns or appears without the emergency release being used, intermittent door lock contact issues are likely present. Inspecting connectors and wiring is within reach of a confident DIYer, but replacing the door lock assembly typically requires a technician familiar with Miele systems.

A reset may temporarily clear the code if the fault was triggered solely by closing the door after the emergency release without following the correct restart procedure. However, if an intermittent contact problem in the door lock assembly or wiring is the root cause, the fault will return. A reset alone is not a repair and should be followed by a thorough inspection of the door lock system.