Bosch washing machine
The door cannot be locked.
DIY: moderateTypical repair: £60–£130.
The door cannot be locked. On a Bosch washing machine, F34 is shown as "door lock fault".
Switch the appliance off at the wall for 5–10 minutes, then restart. If F34 comes back, work through the checks on this page — the fault is real and needs fixing, not just resetting.
£60–£130. is typical, depending on the part. Simple blockages cost nothing to clear yourself.
Not always. Codes are broadly consistent within a brand, but model ranges differ. Check your manual if the symptoms below don’t match.