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Error code reference

AEG Washer Error Code CD

Door lock defect, wiring to door lock defective, or electronics defective.

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What the CD error code actually means

The CD error means your AEG washer has detected a problem with the door locking mechanism and cannot confirm the door is properly secured. This is a safety feature that prevents the machine from running with an unsecured door. You will need a technician to inspect the door lock, its wiring, or the washer's control board to resolve the issue.

Diagnostic procedure

The full CD procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Replace door lock; replace cable; replace electronics.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of CD

Ranked by how often they cause this code
  1. 1Failed door lock assembly
  2. 2Defective or damaged wiring harness
  3. 3Loose or corroded connector at the door lock
  4. 4Faulty main control board or secondary electronics

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Questions people ask about CD

What does CD mean on a AEG washer?
The CD code on an AEG washer indicates a door lock defect. The machine has detected that the door lock assembly is not operating correctly, the wiring to it is defective, or there is a fault in the control electronics. The washer will not run while this fault is active because the door lock is a core safety component.
Is it safe to use my AEG washer when the CD code is showing?
No, you should not attempt to use the washer while the CD code is active. The door lock is a safety device that prevents the drum from spinning with an unsecured door. Operating a machine with a confirmed door lock fault could result in the door opening mid-cycle, which is a water and injury hazard.
How much does it cost to repair the CD error on an AEG washer?
Repair costs vary depending on which component has failed. Door lock assembly replacement is typically the least expensive repair, with parts generally ranging from $20 to $70 and labor costs on top of that. Wiring harness repair is similarly priced for parts but may involve more labor time. Main control board replacement is the most expensive outcome, with boards often ranging from $100 to $300 or more depending on the model, plus labor.
Can I fix the CD error myself?
Some basic checks are within reach for a confident DIYer, such as inspecting the door lock wiring harness for loose connectors and reseating any disconnected terminals. However, testing the door lock for correct continuity and replacing the lock assembly or control board typically requires disassembly of the machine and basic electrical knowledge. If you are not comfortable working with appliance wiring, a qualified technician is recommended.
Will resetting the washer clear the CD error code?
A power reset by unplugging the machine for a few minutes may temporarily clear the code if the fault was caused by a transient signal issue or a loose connector that has been reseated. However, if the door lock assembly, wiring, or control board has a genuine hardware fault, the CD code will return as soon as the machine attempts to lock the door again. A reset alone is not a repair.

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