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Miele Dishwasher F12 / F13 / F15 Error Code

Water inlet blocked or restricted on Miele dishwashers.

MieleAll Miele dishwasher codes

F12 / F13 / F15
Easy DIY fix

The dishwasher isn't getting enough water in. A closed supply valve, a clogged filter in the inlet hose fitting, a kinked inlet hose or low water pressure are the causes Miele lists for all three codes.

Compatible models

Shown on Miele dishwashers with a code display; Miele doesn't say which models use F12 versus F13 or F15.

Also shown as

Miele gives F12, F13 and F15 the same causes and fixes. The minimum flow pressure for these codes is 7 psi (50 kPa, 0.5 bar).

Difficulty

Most people can clear this one at home with simple checks.

Not sure you are reading the code right? See how to read Miele dishwasher codes.

Safety first: unplug the dishwasher (or switch off its breaker) before touching filters, hoses or panels. If you smell burning or gas, or see water near the outlet, stop and call a professional.

How to fix Miele F12 / F13 / F15

  1. Open the supply valve

    Check that the valve feeding the dishwasher (under the sink in most US kitchens, often a stopcock in UK installs) is fully open.

  2. Clean the inlet filter

    Switch off and unplug the dishwasher, then close the supply valve. Unscrew the hose from the valve, remove the seal and pull out the small plastic filter with needle-nose pliers. Rinse it, put filter and seal back, reconnect and open the valve slowly. The plastic housing on the hose holds an electric valve, so never dip it in water.

  3. Straighten the inlet hose

    Remove any kinks or tight loops. Check the hose again over the next few days, since a kinked spot can weaken and split. If it's damaged, contact Miele for a replacement.

  4. Rule out low pressure

    If other taps in the house are weak too, pressure may be under the 7 psi (50 kPa) minimum. That's one for a plumber or your building manager.

When to call a technician

If the water's on, the filter is clean and the code still shows, contact Miele Service.

Parts linked to F12 / F13 / F15

These are the parts most often behind this code. Tap one to see what it does and the signs it is failing.

Order parts by your full model number so they fit.

Frequently asked questions

Which Miele models show the F12 / F13 / F15 code?

Shown on Miele dishwashers with a code display; Miele doesn't say which models use F12 versus F13 or F15.

Can I fix Miele F12 / F13 / F15 myself?

Usually, yes. Most F12 / F13 / F15 problems clear with simple checks you can do at home. Start with the first step above: open the supply valve.

Other Miele dishwasher codes

Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.

Sources we checked