F90
Miele
Door Motor Positioning Error
F90 error; oven door will not lock or unlock properly, especially around self‑clean cycles.
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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
Weak or stalled door lock motor, Misaligned latch mechanism, Faulty door position sensor, Obstruction preventing full lock travel
How to Fix / Troubleshooting
Safety: Ensure the oven is cool. Disconnect power before mechanical adjustments.
- Check for binding: Open and close the door slowly, feeling for resistance. Inspect hinges and latch for bent parts.
- Manual release: Use the manual release (if provided) to unlock the door and inspect the door lock mechanism.
- Lubrication: Lightly lubricate moving metal‑on‑metal points with a high‑temperature‑rated lubricant (avoid getting any on seals or inside the oven cavity).
- Sensor check: Test the door position switch or sensor for proper operation with a multimeter.
- Replace lock assembly: If the motor is weak or the sensor faulty, replace the complete door lock assembly.
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Repair Difficulty
Hard
4/5
Required Part
Door Lock Assembly
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