Miele Washer Error Code F4003

F4003 is an informational status code indicating that the door lock has disengaged and the door can be safely opened. It is not a fault code and does not indicate a malfunction in most situations. You will commonly see it at the end of a completed cycle or after pausing and cancelling a cycle.

Yes. F4003 specifically communicates that the machine has determined it is safe for the door to be opened. The drum has stopped rotating and water levels are at a safe point before this status is displayed. You can open the door without risk of injury or water spillage under normal conditions.

If F4003 is appearing mid-cycle and investigation points to a faulty door lock assembly, replacement parts and labor can range from around $100 to $300 depending on the specific model and your location. If the issue is a loose wiring connection, a service call to diagnose and reseat the connector may cost significantly less. Control board replacement, if ever needed, is typically at the higher end of repair costs.

In the vast majority of cases, no repair is needed. F4003 is a normal status message that signals the door is unlocked and safe to open. If the code appears mid-cycle while the machine should still be running and the door was not supposed to unlock, then further inspection of the door lock assembly and its wiring is warranted.

Because F4003 is an informational status rather than a fault, it will typically clear on its own once you open the door or start a new cycle. A manual reset by powering the machine off and back on can also clear the display, but this is generally not necessary for normal operation.