What Causes the Secondary Air System Failure in Audi A6?
1 Answers
Here are the reasons and solutions for the secondary air system failure in Audi A6: Secondary Air Injection System Malfunction: If the secondary air injection system malfunctions, simply recalibrating the system can resolve the issue. Follow these steps: Open the driver's side door of the Audi A6. Press the brake pedal to prepare for engine start. Press the start button. All dashboard lights will illuminate, indicating the engine has started. Press and hold the top of the stalk on the right side of the steering wheel for more than 5 seconds to complete the recalibration. Air Duct and Combination Valve Malfunction: Inspect the air ducts and combination valve of the secondary air injection system. A clogged combination valve (check by blowing compressed air after removal) usually requires replacement.