Oven
F6
The F6 error code on a Miele oven indicates a fault with the oven’s temperature sensor (NTC sensor), meaning the appliance cannot accurately read or regulate its internal temperature. It’s a moderately serious fault — the oven will typically lock out to prevent overheating or underperforming, and it won’t resolve itself without intervention.
What does this error mean?
F6 signals that the oven’s control board has detected an abnormal reading from the NTC (Negative Temperature Coefficient) temperature sensor — the component responsible for monitoring the oven cavity temperature. The reading is either out of the expected range, stuck, or absent entirely, which prevents the oven from managing heat safely. Miele ovens are designed to shut down cooking functions in this state to protect both the appliance and your home.
Est. repair cost
£100–£180 professional repair (parts + labour); £15–£40 DIY NTC sensor replacement part only
🔍 Likely causes
🛠️ Step-by-step fix
Power off and unplug the oven at the wall, or switch off at the fuse board. Leave it to cool completely for at least 30 minutes.
Perform a hard reset: with the oven fully powered down for 5–10 minutes, restore power and see if the F6 code clears. This resolves transient sensor glitches caused by power surges.
Check Miele’s documentation: locate your model number (usually inside the oven door frame) and cross-reference the F6 code in your user manual or on Miele’s UK support website to confirm the fault definition for your specific model.
Visually inspect the oven interior for obvious signs of damage — burnt wiring, a visibly broken sensor probe mounted on the oven wall, or melted connectors. Do not touch internal wiring with the oven powered on.
If you’re comfortable with basic appliance repairs, the NTC sensor on most Miele ovens is accessible after removing the back panel of the oven cavity (typically 2–4 screws). Replacement sensors are available from Miele spare parts suppliers for £15–£40. Disconnect the old sensor, fit the new one, and restore power to test. Only attempt this if you are confident working with unplugged electrical appliances.
If the error persists after a reset and you are not confident replacing the sensor yourself, stop here and book a qualified appliance engineer — do not attempt to open the control board or tamper with mains wiring.
📞 When to call a professional
Call a qualified appliance engineer if the F6 code returns after a hard reset, if you find burnt or damaged wiring inside the oven, or if replacing the NTC sensor yourself doesn’t resolve the fault. When booking, tell the engineer: ‘My Miele oven is displaying an F6 error code, which I understand relates to the NTC temperature sensor.’ This helps them arrive with the right parts and cuts labour time.
⚖️ Repair or replace?
A professional repair for an F6 fault — typically an NTC sensor replacement including call-out and labour — costs around £100–£180 with a UK appliance repair company. If your Miele oven is under 8 years old, repair is almost always the right call given Miele’s build quality and the relatively low cost of this fix. For ovens over 10 years old with recurring faults, replacement becomes worth considering — a comparable Miele built-in oven starts at around £700–£900 new.