Aeg Dryer Error E40

⚡ Quick Answer: The AEG dryer E40 error code indicates a malfunction in the door lock mechanism, preventing the dryer from starting. This may occur if the door is not... ✅ DIY Fixable

What Does Error E40 Mean?

The AEG dryer E40 error code indicates a malfunction in the door lock mechanism, preventing the dryer from starting. This may occur if the door is not closed properly or there is an issue with the door lock or sensor. Symptoms include the dryer not starting despite the door appearing closed, and the door lock not detecting a closed door.

Common Symptoms:

  • Dryer does not start with E40 displayed
  • Door may appear closed but machine won’t begin cycle
  • Door lock/sensor not detecting closed door

Possible Causes

  • Door not closed completely (high)
  • Faulty door lock or sensor mechanism (medium)

How to Fix Error E40

DIY Fix Check and reseat the dryer door

  1. Ensure dryer is off.
  2. Check that no laundry is caught between the door and seal.
  3. Close the door firmly until you hear a click.
  4. Try restarting the dryer cycle.

DIY Fix Perform a basic reset

  1. Unplug the dryer from the power socket.
  2. Wait 30 seconds.
  3. Plug the dryer back in.
  4. Select a program and try to start the cycle.

Technician Only Inspect/replace door lock or sensor

  1. Disconnect power to the dryer.
  2. Remove the top/front panel to access the door latch assembly.
  3. Test the door switch and sensor continuity with a multimeter.
  4. Replace the door lock assembly if faulty.
  5. Reassemble and test operation.

Parts needed: door latch/lock assembly, door sensor/switch

🛑 When to Call a Pro:
  • If door closure checks and reset do not clear E40
  • If door lock mechanism is broken or sensor wiring seems damaged

Technical Specifications

wattage 2000W
component Door Lock Mechanism
resistance 1-5 ohms
part_number AEG 124000000
voltage_rating 230V AC

Common Questions

What does E40 error mean on AEG dryer?

E40 error indicates a malfunction in the door lock mechanism, preventing the dryer from starting.

Can I fix AEG dryer E40 error myself?

Yes, you can check and reseat the dryer door or perform a basic reset by unplugging and replugging the dryer.

How much does it cost to fix E40 error?

Repair costs for E40 error typically range from $50 to $200, depending on parts and labor.

When should I call a technician for E40?

Call a technician if door checks and resets do not clear the E40 error or if there's visible damage to the door lock or sensor.

Sources & References

Data last verified: 2026-03-13

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