My 1999 Audi A4 2.8 V6 (only 76,000 original miles) is in great shape (I live in San Diego County, and drove to Las Vegas and back and got 30 MPG on the trip…although I did turn-off the AC).
For the last three months, the check engine light has been on (it is not flashing). I had the engine scanned at both AutoZone and O’Reillys, and both scans came-up with the same code: P0411 - Secondary Air Injection - Incorrect Upstream Flow. One of the scans also stated: Inspect for faulty vacuum hose(s) at Air Injection System.
I have no idea what this means…however, I am hoping it is something I can easily fix myself (specifically, I am hoping I only need to change-out an easily-accessed hose somewhere on the car).
I will appreciate all feedback…good news, and bad news.