Miele Washer F2 — What It Means & How to Fix It
Also shown as F 2 on some models.
F2 is the open-circuit twin of F1 — the temperature sensor reads disconnected, so the heater stands down until a technician confirms the sensor or wiring.
What this code means
Miele USA defines F2 as an 'open circuit in heating/water temperature sensor circuit' — the machine can't see its water-temperature sensor at all. As with F1, heating is disabled the moment the code registers. The usual path is the NTC sensor's internal failure (often intermittent, failing as it warms), a connector that's worked loose, or a wiring break. A five-minute reset and a cautious glance at the sensor connector are the owner-level steps; the reliable fix is sensor or board work by a Miele-trained technician.
Documented by Miele USA for Miele washers/washer-dryers as 'Fault F2'; pairing it with F1 is the standard shorthand in support references (Domex lists the pair as F1/F2).
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| NTC sensor has failed open-circuited | Occasional | No — technician job |
| Sensor connector unseated or corroded | Less common | Limited — visual check |
| Broken wire in the sensor harness | Less common | No — technician job |
What you can try yourself
- Switch off at the wall, wait five minutes, then restart on a short cold program to rule out a transient.
- If F2 returns, do a cautious visual check of the sensor wiring behind the panels only if you can do it safely and non-destructively.
- Bear in mind the sensor can test fine when cold and fail once warm — a spot reading isn't proof.
- Book a Miele-trained technician for sensor or harness replacement.
When to call a technician
- F2 returns immediately after a reset.
- Corrosion or moisture anywhere near the sensor connector.
- The machine won't complete a cycle without throwing F2.
Typical professional repair cost: About $150–350 for a technician visit; the sensor part is inexpensive, reaching it is the cost.
Frequently asked questions
F1 vs F2 — which is worse?
Neither is worse — they're the same sensor failing two ways (short vs open). Both disable heating and both point the same direction: technician, unless a reset clears it.
Why would F2 show only halfway through a wash?
NTC sensors commonly fail open once they heat up. The cold-start reading looks fine and the code appears when the element begins to work — a very typical Miele F2 story.
Sources checked
Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.
Related Miele codes
- Miele Washer F1 F1 on a Miele washer is a short circuit in the heating/water-temperature sensor circuit — a reset is worth one try, then it's technician work.
- Miele Washer F10 F10 means the washer isn't getting enough water — closed stopcock, blocked inlet filter or a faulty inlet valve — and the first fixes are all done at the plumbing, not in the machine.
- Miele Washer F11 F11 on a Miele washer is a drainage fault — usually a blocked debris filter, a kinked hose or a failing drain pump, and the filter clean is a safe first move.
- Miele Washer F20 F20 says the washer's heater isn't getting the water to temperature — a reset is safe to try, but element and sensor testing is multimeter work.
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