Bosch Washer Error Code Er:02

Er:02 means the washer's door lock failed to unlock after a cycle completed. The control board sent the unlock command but could not confirm the lock released. This points to either a mechanically jammed door lock assembly or a problem with the wire harness connecting the lock to the control board.

You should not continue running wash cycles while Er:02 is active. The fault indicates the door lock is not functioning reliably, which means the door may fail to secure properly during a cycle. A door that cannot lock correctly poses a risk of water leakage and potential injury if the door opens during operation.

A reset may temporarily clear the code from the display, but it will not resolve the underlying problem. If the door lock mechanism is jammed or the wire harness is damaged, the fault will return as soon as the washer attempts to unlock the door again. The root cause needs to be diagnosed and corrected before the machine will operate reliably.

Start by inspecting the door lock mechanism for mechanical binding, debris around the strike plate, and any visible damage to the lock assembly itself. Next, trace the wire harness from the door lock to the control board and look for pinched wires, loose connectors, or corrosion. If the harness checks out and the lock is seized or shows signs of internal failure, the door lock assembly will need to be replaced.

If the repair requires only cleaning the latch area or reseating a connector, the cost could be minimal or just your time. A replacement door lock assembly typically costs between $30 and $90 for the part. If professional labor is needed, total repair costs including diagnosis and installation generally range from $100 to $250 depending on your location and service provider.