Miele Washing Machine Error Code F1
NTC temperature sensor short-circuited
The control read the water/heating NTC temperature sensor (or its wiring) as short-circuited, so heating is disabled and the program stops with F1. At about 68°F the sensor should read roughly 14.5k ohms — a reading far below that points to a shorted thermistor, a pinched harness, or moisture in a connector.
What Does Error Code F1 Mean on a Miele Washing Machine?
NTC temperature sensor short-circuited.
The control read the water/heating NTC temperature sensor (or its wiring) as short-circuited, so heating is disabled and the program stops with F1. At about 68°F the sensor should read roughly 14.5k ohms — a reading far below that points to a shorted thermistor, a pinched harness, or moisture in a connector.
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
- 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.
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Thanks for letting us know. If the steps above didn't work, see when to call a professional.
When to Call a Professional
If the new sensor faults immediately, a wiring or board issue is likely — Miele authorized service recommended.
Related Error Codes
Same Code on Other Brands
Error code F1 appears on these other brands too. See every brand that shows F1 →
Find Replacement Parts
Use these links to find the exact replacement parts for your Miele Washing Machine:
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More Miele Washing Machine Error Codes
Frequently Asked Questions
What does error code F1 mean on a Miele Washing Machine? +
How do I fix error code F1 on my Miele Washing Machine? +
How do I clear or reset error code F1? +
Is error code F1 serious? +
Sources & References
- • Miele Customer Support — official manufacturer documentation
- • Our editorial & verification policy
Content verified against manufacturer service documentation. Last verified: June 14, 2026.