VW Group Specialists in Swindon
Audi OBD-II Fault Codes
Search our complete list of Audi Diagnostic Trouble Codes (DTCs) and find out what your check engine light means.
About Audi Fault Codes
When the check engine light appears on your Audi, it means the On-Board Diagnostic (OBD-II) system has detected a fault somewhere in the vehicle.
Each fault is stored as a unique code that helps pinpoint the area or component affected.
These codes are standard across most modern Audi models, covering areas like the engine, gearbox, emissions system, and electronics.
If you have a scanner, you can read the fault code yourself — or bring your vehicle to us for a full diagnostic scan using dealer-level VAG equipment.
