Miele Washing Machine Error Code F02 — NTC Temperature Sensor Open Circuit
What this means
Error F02 on Miele washing machines means the control board reads infinite resistance from the NTC sensor — the sensor circuit is broken. This can be caused by a broken sensor element, a disconnected or corroded connector, or a broken wire. Unlike F01 (short circuit), F02 means no signal is reaching the board at all.
Alternate codes: F 02, F2
Step-by-step fix
4 stepsAccess and inspect the NTC sensor connector
Unplug the machine and remove the back panel. Locate the NTC sensor connector near the heating element. Check if the connector has come loose or if the pins are corroded.
Vibration during spin cycles can gradually loosen push-on connectors over months or years.
Test the NTC sensor
Disconnect the sensor and measure resistance with a multimeter. At room temperature it should read 5,000–15,000 ohms. An infinite reading (OL on the multimeter) confirms the sensor is open-circuit internally.
Try gently wiggling the sensor leads while measuring — if the reading flickers, the break may be in the lead wire at the sensor body.
Test the wiring harness
With the sensor disconnected, measure continuity of each wire from the sensor connector to the control board connector. An open-circuit reading on either wire means a break in the harness.
Flex the wiring gently while measuring to find intermittent breaks.
Replace the sensor or repair wiring
If the sensor is open-circuit, replace it. If a wire is broken, repair it with a proper crimp splice (solder and heat-shrink for best results). Reassemble and test.
Do not use electrical tape as a permanent wire repair in a high-moisture environment. Use heat-shrink tubing over solder joints.
When to call a professional
If both the sensor and wiring test fine but F02 persists, the control board input circuit is likely damaged.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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