Miele Washer Error F16 — What It Means & How to Fix It

What Does This Error Mean?

F16 means your Miele washing machine's NTC temperature sensor is not working correctly — it is either sending no reading, or a reading that falls outside the expected range for normal operation. Without a reliable temperature reading, the control board cannot manage the heating element safely, so it shuts down the heating circuit. The NTC sensor is a low-cost part that is relatively straightforward to replace.

Affected Models

Miele W1 Classic
Miele W1 ChromeEdition
Miele WDB020
Miele WCI660
Miele WSI863

Common Causes

NTC thermistor failed open circuit — internal element broken, sending no signal
NTC thermistor failed short circuit — stuck at near-zero resistance, sending a false reading
Loose or corroded two-wire connector at the NTC sensor
Broken wire in the sensor harness between the thermistor and the control board
Water intrusion into the sensor connector causing a bridged or corroded circuit

How to Fix It

Turn off the machine and unplug it from the wall. Wait 10 minutes and restore power for a control board reset — a transient sensor glitch can occasionally produce a false F16.

If F16 reappears within the first few minutes of a new cycle, the fault is hardware-related and not a one-time glitch.
Check whether F15 (heater fault) is also displayed. F16 and F15 often appear together because a faulty temperature sensor prevents the control board from confirming heating, which triggers both codes.

If both are present, the NTC sensor is almost certainly the root cause — fix F16 first and F15 will likely resolve too.
Contact a Miele-certified technician and describe both codes. The technician will locate the NTC sensor (typically clipped into the heating element assembly at the bottom rear of the drum) and test it with a multimeter.

At room temperature (20°C) a healthy Miele NTC sensor reads approximately 10,000 ohms. Values of 0 (short) or infinite (open) confirm a failed sensor.
The technician will disconnect the sensor connector and check the wiring harness for corrosion, breaks, or pinching before replacing the sensor — a damaged harness must also be repaired.

Sensor connectors in the bottom of the machine are prone to moisture exposure and occasional corrosion over many years of use.
After sensor replacement, the technician will run a test cycle at 60°C or higher and verify that the temperature reading on the service display rises normally during the heating phase.

A properly functioning NTC will show a smoothly rising temperature reading as the water heats — confirming the sensor and control board are communicating correctly.
After repair, run a 60°C cotton cycle with your normal laundry to confirm the machine heats, washes, and drains normally without any fault codes.

Check that F15 has also cleared — if it has not, the heating element itself may also need to be inspected.

When to Call a Professional

Replacing the NTC sensor requires accessing the rear drum area or sump area of the machine and working near water and electrical connections. While it is one of the simpler internal repairs on a Miele, it requires confidence with appliance disassembly. Contact Miele service or a Miele-certified technician if you are not comfortable with the process.

Frequently Asked Questions

What is an NTC sensor and why does my Miele washer need one?

NTC stands for Negative Temperature Coefficient — it is a type of resistor whose electrical resistance decreases predictably as temperature increases. Your Miele washing machine reads this changing resistance several times per minute to precisely monitor water temperature and control the heating element. Without this sensor, the machine cannot heat water safely.

Can I still use the washer on cold cycles while waiting for F16 to be repaired?

Yes — cold programmes (30°C and below, where no active heating is required) will typically still run as normal. Avoid programmes that require heating until F16 is repaired, as the heating circuit is disabled when the fault is active.

Is F16 the same as F15 or a different fault?

They are related but different faults. F16 specifically identifies a fault with the NTC temperature sensor itself. F15 identifies a fault with the heater circuit more broadly — which can be caused by a failed element, a failed sensor, or a control board issue. F16 often accompanies F15 when the sensor is the root cause of the heating problem.