Miele Washing Machine Error Code F1

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: July 19, 2026

⚠ Medium Severity 🔧🔧 Moderate DIY Also shown as: F01

NTC temperature sensor short-circuited

The most common cause of the F1 error on a Miele washing machine is thermistor internally shorted (~55% of cases); start with: power cycle.

💰 DIY cost: $25–$60 👨‍🔧 Pro cost: $200–$380 Save $175+ by doing it yourself

Miele Washing Machine error code F1 on the display panel — How the F1 code appears on a Miele washing machine display

What Does Error Code F1 Mean on a Miele Washing Machine?

NTC temperature sensor short-circuited.

F1 fires when the control board reads the NTC (temperature) sensor circuit as short-circuited — an abnormally low resistance well under the expected ~14.5k ohms at room temperature. The board disables heating and halts the program to protect against uncontrolled heating. It differs from open-circuit or plausibility faults (F2/F20), which point to a broken sensor or wiring rather than a short. A shorted thermistor, moisture in the connector, or a pinched harness are the usual triggers.

Models affected: Miele front-load washers including the W1 Series; the F1/F01 code appears across most Miele washer generations that use an NTC heating-circuit sensor

What owners report: Owners commonly report F1 appearing mid-cycle, often on a hot wash where heating is demanded. A damp or corroded sensor plug can be a false trigger, and some find a power cycle after drying the connector clears it temporarily before a full sensor replacement is needed.

What Causes Error Code F1?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

1

Thermistor internally shorted 55% of cases
2

Connector wet or corroded 25% of cases
3

Wiring harness chafed/pinched 20% of cases

How to Fix Miele Washing Machine Error Code F1

🔧🔧 Moderate DIY Est. time: 30–60 min

⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.

1

Power cycle

Switch off at the wall, wait 5 minutes, switch back on — a transient moisture short can clear.
2

Inspect sensor connector

Check for water ingress or corrosion at the NTC plug and dry it out.
3

Test the thermistor

At room temp it should read ~14.5k ohms; near 0 ohms confirms a short.

🔩 Multimeter
4

Replace the NTC sensor

Fit a genuine Miele thermistor if the part is shorted.

🔩 Miele NTC thermistor ($25–$60)

How to Reset Error Code F1

Switch off at the wall, wait 5 minutes, restart. If F1 returns, the sensor or wiring needs attention.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

Did this guide fix your appliance?

When to Call a Professional

If the new sensor faults immediately, a wiring or board issue is likely — Miele authorized service recommended.

Average professional repair cost for this issue: $200–$380

Related Error Codes

NTC temperature sensor open-circuited

⚠ Medium Severity

F20

Heating fault — water not reaching target temperature

⚠ High Severity

Same Code on Other Brands

Error code F1 appears on these other brands too. See every brand that shows F1 →

Samsung Microwave F-1

Keypad membrane failure — dead or stuck key

LG Oven F1

Oven temperature sensor open circuit

Whirlpool Dryer F01

Main control board failure

Whirlpool Oven F1

Control board failure

Find Replacement Parts

Use these links to find the exact replacement parts for your Miele Washing Machine:

🔩

Search PartSelect

Miele Washing Machine repair parts

🔧

Search RepairClinic

Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More Miele Washing Machine Error Codes

F11 Pump fault — water not draining F19 Drain time exceeded — slow or failed drain F16 Water protection system activated — flood protection triggered F53 Motor fault — drive motor failure F31 NTC temperature sensor fault F15 Hot water intake fault

Frequently Asked Questions

Can I keep using my Miele Washing Machine when error F1 appears? +

You often can for a cycle or two, but the sensor issue behind F1 will keep interrupting normal operation until it is fixed. Plan the repair rather than ignoring the code.

What most commonly causes F1 on a Miele Washing Machine? +

Across reported Miele washing machine repairs, the most frequent is thermistor internally shorted (55% of cases), connector wet or corroded (25%), then wiring harness chafed/pinched (20%). Check them in that order before replacing any parts.

F1 keeps coming back after a reset — what should I check next? +

A reset only clears the stored F1 fault; if it returns, the sensor problem is still present. Move on to the physical checks — power cycle, then inspect sensor connector — since the code will reappear until the root cause is resolved. This is a moderate job — a multimeter and some disassembly are usually involved.

How much does it cost to fix Miele Washing Machine error F1? +

A DIY repair typically runs $25–$60 in parts, versus $200–$380 for a professional service call, so handling it yourself saves around $175. Expect the work to take roughly 30–60 minutes.

Which Miele Washing Machine models show error F1? +

F1 is documented on Miele front-load washers including the W1 Series; the F1/F01 code appears across most Miele washer generations that use an NTC heating-circuit sensor. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

• Miele Customer Support — official manufacturer documentation
• Our editorial & verification policy

Content verified against manufacturer service documentation. Last verified: July 19, 2026.

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