Check engine light 2001 audi a6?

If the check engine light is illuminated on a 2001 Audi A6, it typically indicates an issue that needs attention, ranging from minor to serious. Common causes include problems with the oxygen sensors, catalytic converter, or ignition system. It's advisable to use an OBD-II scanner to retrieve the trouble codes, which can help pinpoint the specific issue. If you’re unsure, consulting a qualified mechanic for diagnostic and repair is recommended.