FixByModel
F16

Bosch F16: Door open or not properly locked

The washer will not start because it cannot confirm the door is shut and locked. Most often the door simply is not latched fully, though a failing door interlock can also trigger it.

DIY fix

By the FixByModel editorial team · Verified 2026-09 · Researched against manufacturer support & repair references (below)

Most likely causes

  1. Door not pushed firmly shut, so the latch did not engage
  2. Laundry caught in the door seal keeping the door from closing flush
  3. Worn or misaligned door catch/handle that no longer clicks home
  4. Faulty door interlock (lock) mechanism
  5. Wiring fault between the door lock and control board
Before you start — unplug the appliance and turn off the water supply. You'll be working near water and electrical parts, and drained water can be hot. If a step involves the pump, wiring, or opening the cabinet and you're unsure, stop and call a qualified technician.

Step-by-step fix

1Reopen and recloseOpen the door fully and close it again with a firm push until you hear or feel the latch click.
2Clear the sealCheck that no clothing is trapped between the door and the rubber gasket preventing a clean close.
3Inspect the catchLook at the door hook and the latch opening for wear, damage or misalignment that stops them engaging.
4Power cycleUnplug the washer for about a minute, then restore power and try starting again to clear a transient lock fault.
5Get the lock checkedIf the door closes properly but F16 (E16 on some models) remains, the door interlock has likely failed and needs a technician to replace it.

Still showing F16?

If you’ve worked through every step and F16 keeps returning, an internal part likely needs testing and replacement. That’s a job for a qualified appliance technician, who can measure the suspect part against the service-manual spec before replacing it.

Which models this applies to

Bosch washing machines. Bosch front-load washers with electronic door interlock; shown as F16 or E16.

FAQ

What does Bosch F16 mean?

Door open or not properly locked. The washer will not start because it cannot confirm the door is shut and locked. Most often the door simply is not latched fully, though a failing door interlock can also trigger it.

What causes Bosch F16?

The most likely cause is door not pushed firmly shut, so the latch did not engage. Other causes include Laundry caught in the door seal keeping the door from closing flush; Worn or misaligned door catch/handle that no longer clicks home; Faulty door interlock (lock) mechanism; Wiring fault between the door lock and control board.

Can I fix Bosch F16 myself?

Usually yes. Start by working through the steps above, beginning with: open the door fully and close it again with a firm push until you hear or feel the latch click.