Miele Dishwasher F12 Error Code

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What it means

The dishwasher detected a water-inlet fault.

Try this first

Make sure the household water valve is fully open.
Check the inlet hose for kinks.
Check that household water pressure is normal.
Restart the dishwasher.

Can I keep using it?⚠ Water-inlet fault

Repair usually required?✅ Often user-correctable

If the error keeps returning

If F12 remains with normal water supply, contact Miele Service.

Official source

Troubleshooting information verified against manufacturer support documentation.

View manufacturer support page →

Safety note:ApplianceSignal provides general troubleshooting information. Always follow the appliance manufacturer's safety instructions and disconnect power when required.

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Miele Dishwasher F12: Quick Answer

What it means: The dishwasher detected a water-inlet fault.

First thing to check

Make sure the household water valve is fully open.

Can I keep using it?

Water-inlet fault

Repair outlook

Often user-correctable

If the code remains

If F12 remains with normal water supply, contact Miele Service.

Model note: Error-code meanings and procedures can vary by model and model year. Confirm the code against the documentation for your exact appliance before replacing parts.

Manufacturer reference: mieleusa.com