AEG Dryer C9 Error Code: Causes and Fixes
Quick answer: Door switch inconsistency
What you’ll notice
Dryer will not start; door switch state is inconsistent with door position.
AEG
Dryer
Code C9
high severity
AEG models: AEG heat-pump dryers have two lint filters: the primary in the door opening and a secondary condenser filter in the lower plinth (pull the plinth cover down to access). Clean the secondary filter every 5 cycles. Vented AEG dryers have only the door-opening filter.
Common causes
- Door not fully closed
- Broken door latch hook
- Failed door switch
Step-by-step fix
- Close the door firmly.
- Inspect the latch hook and door switch plunger for damage.
- Test the door switch continuity with a multimeter.
Tools you may need
MultimeterScrewdriver set
Prevention
- Do not slam the dryer door — it damages the latch over time.
When to stop DIY
Replace the door switch if it shows no continuity when pressed.
FAQ
What does C9 mean on AEG dryer?
C9 usually indicates: Door switch inconsistency.
Can I keep using the appliance with C9?
Use caution. Severity is high. Replace the door switch if it shows no continuity when pressed.
How long does this fix usually take?
Typical first-pass troubleshooting takes 5 minutes (close check); 20 minutes (switch replacement).