Door Lock Fault
The F01 error code means the door lock mechanism on your Miele washing machine is not engaging or confirming properly. The control board requires a confirmed door lock before any cycle can begin — water should never fill the drum with the door unlocked.
~35%
DIY Fixable
$120-300
Typical Repair Cost
30 min – 1.5 hrs
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. The washing machine will not start without a confirmed door lock. This is a critical safety feature — an unlocked door during a spin cycle could be extremely dangerous.
Can I reset the code?
Yes. Yes. Turn off at mains for 5 minutes. If the lock solenoid was temporarily stuck, a reset may clear it.
When to stop immediately?
Stop if you notice: The door latch is visibly broken, The lock makes no sound when the cycle is started.
Symptoms You May Notice
Machine will not start
You press Start but nothing happens — the board cannot verify the door is locked
Door appears closed but unlatched
The door clicks shut but the lock solenoid does not engage
Lock indicator does not illuminate
The door-lock LED or icon on the display stays off
F01 appears immediately
The code shows as soon as you try to start any program
Possible Causes
Worn Door Latch
The plastic latch or hook on the door has worn down and no longer engages the lock mechanism fully.
DIY PossibleFaulty Door Lock Assembly
The bi-metal or solenoid-operated lock unit has failed electrically — it does not activate when signaled.
Requires ProfessionalMisaligned Door Hinge
A sagging or bent door hinge prevents the latch from aligning with the lock receiver.
DIY PossibleWiring Fault
A loose connector or broken wire between the lock and the control board interrupts the lock confirmation signal.
Requires ProfessionalControl Board Relay Fault
The relay that powers the door lock solenoid has failed on the main PCB.
Requires ProfessionalSafe Checks You Can Do
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1
Inspect the Door Latch
Look at the hook/tongue on the door that enters the lock. Check for visible wear, cracks, or deformation. Make sure nothing is caught in the lock opening.
Small items like socks or fabric can get trapped in the door frame and prevent full closure.
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2
Close the Door Firmly
Push the door firmly until you hear and feel a positive click. Some Miele washers require a deliberate push to engage the latch.
If the door bounces back slightly, the hinge spring may be worn.
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3
Check Door Alignment
With the door open, look at how the latch lines up with the lock receiver on the frame. If there is a visible gap or offset, the hinge may need adjustment.
Check that the machine is level — an unlevel washer can cause door misalignment.
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4
Power Reset
Turn off at the mains for 5 minutes. The door lock controller may need to reinitialize.
After reset, try closing the door again — listen for the lock solenoid clicking.
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5
Listen for the Lock Sound
When you close the door and press Start, listen for a click or buzz from the lock area. If you hear it, the lock is activating. No sound means no power reaching the lock.
The lock typically takes 1-3 seconds to engage after pressing Start.
When to Call a Professional
Contact a qualified Miele technician if:
- The lock assembly does not activate (no click or buzz)
- The door latch is cracked or deformed
- Wiring to the lock shows visible damage
- F01 persists after all DIY checks
- The machine is under warranty
Need Professional Help?
Find qualified Miele technicians in your area for proper diagnostics and repair.
Schedule Appointment