Sign in
Model family

Audi A8 L

Observed 2000–2023 (US EPA) · observed model years, not a production range

  • Check Engine Light and P0391 Fault Code

    AudiWorld · jaguyton · 30 Oct 2026

    Hello I changed the valve cover gaskets in my 2016 A8 L 3.0 TFSI engine yesterday. Took it for a test drive, everything was fine. Went to go pick up dinner and the check engine light came on. ...