Miele Dishwasher F446 error
ErrorF446
F446 is identified by Miele's official manual as the door lock is defective. Follow the exact model-scoped checks and safety boundary below.
✓
Reference source listed as Miele official commercial dishwasher operating instructions PFD 402-407.
Open official source ↗What the code means
the door lock is defective
Isolate the appliance when safe. Do not force or bypass the door lock. Stop using the dishwasher and contact Miele Customer Service. Do not open fixed panels or test live circuits.
Typical symptoms
01F446 appears on the dishwasher display
02The appliance may stop, pause, or limit the affected function
03The code returns when the same model-specific condition remains active
Likely causes
Start with the least invasive explanation and stop if the check requires internal electrical or sealed-system access.
01the door lock is defective
02Confirm the exact model against Miele's official instructions
Safe next steps
- 1Record the complete F446 display and the full Miele dishwasher model
- 2Confirm that the displayed code matches the linked official Miele source
- 3Do not force or bypass the door lock. Stop using the dishwasher and contact Miele Customer Service.
- 4Stop and arrange model-specific service if F446 returns
Step-by-step repair
- 1Do not force or bypass the door lock. Stop using the dishwasher and contact Miele Customer Service. No internal component replacement is verified from F446 alone.
Repair details
€Estimated cost
The published checks normally need no replacement part. Internal repair cost is model- and region-specific; obtain a written Miele service quote after diagnosis.
The published checks normally need no replacement part. Internal repair cost is model- and region-specific; obtain a written Miele service quote after diagnosis.
⏱Estimated time
External checks take about 5–30 minutes; professional diagnosis and repair time depend on the exact model.
External checks take about 5–30 minutes; professional diagnosis and repair time depend on the exact model.
🔧Tools
Exact Miele model number and official manual, No internal electrical test tool is permitted
Exact Miele model number and official manual, No internal electrical test tool is permitted
▣Spare parts
No replacement part is confirmed by F446 alone. Confirm the exact model, failed component, and manufacturer part number before ordering.
No replacement part is confirmed by F446 alone. Confirm the exact model, failed component, and manufacturer part number before ordering.
What not to do
- Do not open fixed panels, test live electrical or sealed-system parts, bypass safety devices, or order a component solely from F446.
Preventive maintenance
- 1Keep user-accessible filters, spray arms, seals, water connections, and the drain path maintained according to the exact model manual.
Frequently asked questions
What does F446 mean?
Miele identifies it as the door lock is defective.
Can I replace a part from the code alone?
No. Confirm the exact model and manufacturer diagnosis first.
Did this fix your appliance?
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