The reading in two sentences
F34 on this washing machine means the door is not locked properly — that is what the manufacturer published for it, and no more. The machine will not run without a locked door, so treat it as out of use until the interlock holds. One of the checks below is an owner check, and the rest of the work is behind a panel.
Error codes
Reference| Code | Meaning |
|---|---|
| F34 | The door is not locked properly. |
What else is happening when this shows
- The programme starts and stops again within moments — A lock that drops out under the first movement produces exactly that.
- The door feels shut but the latch does not click home — A door that rests against the seal without engaging reads as open to the control.
- NEAR MISS — the door locks and the cycle runs, but the code appears mid-cycle — That is a lock that drops out under vibration, which is a different fault from one that never engages.
What triggers F34, most likely first
- A failing door interlock assembly — It goes first because it is the wear item the code points at: the interlock operates on every cycle and is heated by every hot wash, and it is the commonest replaced part on this fault.
- A failed door switch or lock solenoid — The switch is a consumable on a part that moves every cycle, and when it fails the control sees an open door on a door that is closed.
The order to work through
- Check the latch tongue and the striker for wear — Visible wear explains a lock that engages and will not hold.
- Close the door firmly with the load pushed back and listen for the lock — A lock that operates and one that is silent point at different halves of the circuit.
- Open and close the door once, deliberately and firmly — If the code clears on a proper close, the fault is mechanical and you have found it in one move.
The reset and the checks that follow it
- Cut power at the breaker for a minute and restore it — A latched fault that survives a full power cycle is a real fault and not a stored one.
About 5 min
- Clear the door line, close the door firmly, power-cycle at the breaker and listen at the start of a programme — You are establishing whether the interlock is commanded at all, which is the one thing you can determine from outside.
About 10 min
- Check the hinge for sag by watching the gap as the door closes — A door that drops as it swings is a hinge problem presenting as a lock problem.
About 10 min
- STOP HERE if the next move is a meter on the lock terminals — That is the line between an owner check and a service call on this fault.
Before a panel comes off
Safety
Unplug the machine or switch off its breaker before any panel comes off — a capacitor can hold a charge after the power is off. Close the supply tap before touching a hose, expect standing water when a filter comes out, and never work round the door interlock.
Where an owner check ends
Call if the latch or the striker is visibly worn, if the harness at the hinge shows chafing, or if the code returns after a full power cycle on a door that closes cleanly.
Other codes on a Bosch washing machine
What is deliberately not here
Treat this as the general Bosch washing machine reading. It stops short of anything model-specific — part numbers, harness colours, connector layouts and service-mode entry — because those differ by family and a technician takes them from the rating plate rather than from a code. A family- or model-specific page, where one exists, is linked from the code index below and is the closer answer.
Links: - [Bosch washing machine error codes](/blog/bosch-washer-error-codes)
Next steps
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
