A Miele F13 error means the machine is not filling with water fast enough to satisfy the internal flow meter. Nine times out of ten, this is caused by a kinked intake hose or a clogged filter screen at the water tap connection.
When I get called out for an F13, the homeowner's usually already panicking because they've got a load of dishes sitting in a dry tub. Don't ignore this one. The machine won't heat, won't wash, and if you keep force-starting it you risk running the pump dry. That turns a fifteen-dollar filter cleaning into a two-hundred-dollar pump job real fast.
OK so here's the deal. Your Miele is measuring incoming water with a little impeller-based flow meter, and it expects a certain number of pulses during the first two minutes of the fill phase. If those pulses don't hit the threshold, the software kills the cycle and throws F13. I've fixed probably fifty of these over the years. Honestly, 80% of them take less than ten minutes once you know where to look. The other 20% is a dead WPS solenoid or a gunked-up impeller, and those take a little more digging.
Most Likely Causes
Based on aggregated repair data, here is the probability breakdown for this error code:
Hose Kinks or Pinches40%
Clogged Inlet Screen30%
WPS Valve Failure15%
Flow Meter Malfunction10%
Plumbing Pressure Issues5%
Symptoms You May Notice
The cycle stops dead about 60 to 90 seconds in, right at the moment you'd normally hear water rushing into the tub.
Intake/Drain indicator light flashing red with F13 on the display.
You can hear a faint humming or clicking near the inlet valve area but zero water sound.
Machine jumps straight into a short drain cycle even though it never actually filled.
Pressing Start just restarts the error loop and F13 is back within two minutes every time.
Can you reset a Miele dishwasher to clear the F13 code?
Press the On/Off button to power the machine down completely. Fix whatever supply issue you found, whether that's unkinking the hose, cleaning the filter, or opening the valve. Turn it back on. Press and hold Start/Stop for about 3 seconds to clear the active fault. Then pick your cycle and press Start. If water flow is back to normal the machine will run right through. F13 coming back within 90 seconds means there's still a restriction somewhere.
Tools Required for Diagnosis
Phillips #2 screwdriverNeedle-nose pliersAdjustable wrenchBucketOld toothbrushTowels or ragsToothpick or wooden skewer (for impeller check)
Diagnostic Checklist
Follow these steps in order. We start with the easiest external fixes before opening up the machine.
ComponentComponent Under Test
Expected Range3500–5000 ohms
ConditionIf Open (OL) or infinite, replace component.
Frequently Asked Questions
Can I just reset the F13 code by unplugging the machine?
You can, but it's basically useless. Unplugging clears the display temporarily, sure. But the second the dishwasher tries to fill again on the next cycle, the flow meter's going to fail that same check and F13 is right back on the screen. You haven't fixed anything, you've just delayed the inevitable by 90 seconds. The code is a symptom. You've got to fix the actual water supply issue, whether that's the filter, the hose, the valve, or the WPS solenoid, before the code stays gone.
Is the Miele WaterProof System (WPS) hose replaceable?
Yeah, and it's not as bad as it sounds. The WPS hose is sold as a complete assembly that includes both the solenoid valve and the hose itself. You can't just replace the solenoid on its own, at least not without voiding everything and sourcing parts that aren't easy to find. If the solenoid has failed electrically, you're buying the whole thing. Genuine Miele WPS assemblies typically run $80 to $120 depending on the model. They're honestly really durable parts. In my experience they only fail from severe hard water scale or occasionally from a power surge. If yours is the original from 10-plus years ago, it's had a good run.
Why does my Miele start draining when the F13 error appears?
That's actually the WaterProof System doing exactly what it's designed to do. When the machine detects a fill failure, it triggers a precautionary drain cycle to clear out any water that might have partially entered the tub. The idea is that if there's a valve or hose issue, you don't want standing water sitting in there or potentially overflowing. So it drains as a safety measure before locking out. Smart design, honestly. A little alarming if you don't know what's happening, but it's the machine protecting itself and your floor.
Could a bad pressure switch cause an F13 error?
Occasionally, yeah, but it's not common. F13 is almost always a flow meter issue, meaning the machine either isn't getting enough water or isn't counting the water it does get. A clogged heater pressure switch can create confusing symptoms on some models, but if your display is specifically showing F13 and not a different fault code, I'd stick to the water supply diagnostic path first. Ninety-five percent of F13 calls I go on are intake hose, filter screen, or shutoff valve. Don't go chasing pressure switch problems until you've confirmed all the basics.
Does water hardness affect the F13 error code?
More than people realize. Hard water is basically F13's best friend. The mineral scale builds up in three places: the mesh filter screen at the tap connection, the impeller shaft inside the flow meter, and inside the WPS solenoid valve itself. Any one of those can cause a slow fill that triggers the fault. If you're in a hard water area and your Miele is throwing F13 for the first time, clean the filter screen first. If it's a recurring issue, look into a whole-house softener or at minimum make sure your dishwasher's internal salt reservoir is properly loaded if your model has one.
How much does it cost to fix an F13 error professionally?
Depends on the cause. If it's just a kinked hose or clogged filter, a tech visit is going to run you $100 to $150 just for the service call, which is honestly frustrating when the fix takes five minutes. That's why I'd always say try the DIY steps first on this one. If it's the WPS hose assembly, add $80 to $120 in parts. If it's the flow meter itself, that's another $45 to $65 in parts plus labor. Worst case, WPS hose plus labor, you're looking at maybe $250 to $300 total. Still way less than a new Miele.
Models Known to Experience F13 Errors
This repair applies to most Miele dishwashers with this error code. Common model numbers include: