E12
Ikea Humidity / Steam Sensor Fault

Microwave shows E12 and sensor cooking or auto programs do not start or abort quickly.

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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

Failed humidity sensor, Sensor covered with grease or residue, Loose sensor wiring, Faulty sensor circuit on control board

How to Fix / Troubleshooting

Safety: Unplug the microwave before accessing internal components.

Steps:

  • 1. Clean the cavity: Wipe down the interior, especially near the top where the humidity sensor is often located behind a small grill or cover. Remove grease and food splatter.
  • 2. Avoid covering vents: Ensure that cookware or covers do not block the sensor area during use.
  • 3. Sensor reset: After cleaning, leave the door open for 30 minutes to dry, then try a sensor cooking program again.
  • 4. Inspect sensor (DIYers): Remove the outer cover and locate the humidity sensor module. Check its connector and wiring for secure fit and no corrosion.

Resolution: If E12 persists, replace the humidity/steam sensor module with the correct IKEA-compatible part.

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Repair Difficulty

Medium 3/5

Required Part

Humidity Sensor
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