F12
Bauknecht
Humidity / Steam Sensor or Moisture Ingress Fault (where fitted)
Oven shows F12, often associated with steam or moisture, display may fog up.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Faulty humidity/steam sensor (on steam‑assist models), Moisture ingress into control panel, Corroded sensor connector, Damaged sensor wiring
How to Fix / Troubleshooting
Safety first: Disconnect power before removing the control panel or sensor covers.
- Drying procedure: Leave the oven door open and allow the appliance to dry for several hours. In mild cases, this can clear the error.
- Inspect control panel: Remove the control panel and check for signs of moisture, condensation, or corrosion on the display and connectors. Dry gently with a hairdryer on low heat at a safe distance.
- Locate humidity sensor: On steam‑assist Bauknecht ovens, the sensor is usually located in the cavity or in the exhaust duct. Inspect it for scale, grease, or corrosion.
- Clean sensor: Wipe the sensor gently with a soft cloth and mild detergent, then dry thoroughly.
- Check wiring: Ensure the sensor harness is intact and firmly connected to the control board.
- Replace sensor: If F12 persists and the sensor shows abnormal resistance values (per service data) or visible damage, replace the humidity/steam sensor.
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Repair Difficulty
Medium
3/5
Required Part
Humidity / Steam Sensor (if equipped)
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