Miele dishwasher
showing F12
F12 is a water inlet code: water is blocked or restricted on its way into the dishwasher.
Mon–Sat, 8am–8pm
- Water supply
- Fill and water valve repair
- Source: Miele
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What F12
actually means.
F12 is a water inlet code: water is blocked or restricted on its way into the dishwasher. Miele lists a closed faucet, a dirty inlet filter, a kinked hose and flow pressure under 7.25 psi as causes.
Miele dishwasher display · also shown as Fault F12
What to do when F12 shows on the dishwasherKind of codeWater supply
Not enough water arrived, or it arrived too slowly. The supply valve under the sink and the inlet screen are checked before the fill valve itself.
Usually leads toFill and water valve repair
A dishwasher that will not fill, fills too little, or keeps filling, traced through the valve, the float and the supply.
Shows up asDishwasher Not Filling With Water
The cycle starts and hums, but little or no water comes into the tub.
MakeMiele
German-built dishwashers designed for long service life, in standard and fully integrated versions.
SourceMiele USA support: F12 on a dishwasher (Wayback Machine copy of mieleusa.com, April 2026; the live page refuses automated reads)
Miele gives F13 and F15 the same water inlet explanation on its US support pages.
Before you book,
in this order.
Each step comes from Miele's own guidance for F12 on its dishwashers. Follow it to the end: the last card says whether this is a visit.
Make sure the faucet feeding the dishwasher is open.
With the machine unplugged and the faucet closed, unscrew the hose at the faucet, pull out the small plastic filter, rinse it and refit it with its seal; never dip the connection housing in water, because it holds an electrical valve.
Straighten any kink or loop in the inlet hose.
If the flow is good and F12 keeps coming back, book a visit.
Still there?
It usually turns into fill and water valve repair. Book with the code and the model number.
What not to do
F12 is not a leak alarm. On a Miele that job belongs to F70.
What you may
notice with it.
The dishwasher problems F12 tends to arrive with. Answer these at the dishwasher before anyone is booked.
All problems
Where F12 usually leads
Fill and water valve repair.
Read these
before the visit.
Short guides that make the call quicker and the diagnosis cheaper.
All guidesMiele
dishwashers.
German-built dishwashers designed for long service life, in standard and fully integrated versions.
Miele dishwasher repair
Built-in dishwasher
The standard 24-inch machine under the counter, and the one nearly every American kitchen has.
Panel-ready dishwasher
Hidden behind a cabinet door, controlled from the top edge, and repaired with the panel's weight in mind.
Compact dishwasher
The 18-inch and ADA-height machines for small kitchens, where the tight tub changes both loading and repairs.
In Miele's own words
The water inlet is blocked or restricted.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Miele gives F13 and F15 the same water inlet explanation on its US support pages.
Miele F12 dishwasher repair,
where we come out.
The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.
All service areasTampa BayFL · 31 areas
Miami / South FloridaFL · 47 areas
New York MetroNY · 75 areas
HoustonTX · 36 areas
ChicagoIL · 50 areas
Los AngelesCA · 95 areas
San DiegoCA · 31 areas
Questions
about F12.
Can I clear F12 myself?
Can I rinse the Miele inlet connection under the tap for F12?
Could low water pressure cause F12 on my Miele?
Back to your everyday
Still showing F12?
Book with the characters exactly as shown, the full model number, and whether any water is on the floor — for a code, that is where the diagnosis begins.