Miele Dishwasher Error Code F70
Flow meter fault — water quantity sensor failure
The most common cause of the F70 error on a Miele dishwasher is flow meter mechanical failure (~65% of cases); start with: clean the flow meter.
What Does Error Code F70 Mean on a Miele Dishwasher?
Flow meter fault — water quantity sensor failure.
F70 fires when the control board stops receiving valid pulse signals from the flow meter that tracks incoming water volume during fill. Because the board relies on those pulses to close the inlet valve at the right quantity, missing or erratic counts risk under- or overfilling. A scaled or debris-jammed impeller, a loose or corroded connector, or a failed meter each cut the pulse train. Unlike F11 (drainage/water level faults), F70 points specifically at the fill-metering sensor, not blocked draining.
What Causes Error Code F70?
Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:
- 1 Flow meter mechanical failure 65% of cases
- 2 Flow meter connector loose 25% of cases
- 3 Scale/debris blocking meter impeller 10% of cases
How to Fix Miele Dishwasher Error Code F70
- 1
Clean the flow meter
Remove the flow meter and flush out scale or grit so the impeller can spin freely during fill.
- 2
Check the connector
Reseat the flow-meter plug and inspect for moisture, corrosion, or a loose pin breaking the pulse signal.
- 3
Check inlet flow
Verify the inlet screen and supply valve are clear so low flow is not being mistaken for meter failure.
- 4
Replace the flow meter
If cleaning and connector checks don't restore pulses, install a matching Miele flow meter.
🔩 Miele flow meter ($40–$90)
How to Reset Error Code F70
After cleaning or replacing the flow meter, restart on a short program and confirm the dishwasher fills normally without F70 returning during the fill step.
Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.
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When to Call a Professional
If F70 returns with clean inlet flow and a known-good meter, the wiring or control board input is failing and Miele authorized service should diagnose it.
Related Error Codes
Same Code on Other Brands
Error code F70 appears on these other brands too. See every brand that shows F70 →
Find Replacement Parts
Use these links to find the exact replacement parts for your Miele Dishwasher:
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More Miele Dishwasher Error Codes
Frequently Asked Questions
Can I keep using my Miele Dishwasher when error F70 appears? +
What most commonly causes F70 on a Miele Dishwasher? +
F70 keeps coming back after a reset — what should I check next? +
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Sources & References
- • Miele Customer Support — official manufacturer documentation
- • Our editorial & verification policy
Content verified against manufacturer service documentation. Last verified: June 10, 2026.