You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join AudiWorld.com today!
NEW FEATURE at AudiWorld!!! We now have a fully integrated Wiki!!
Check it out!
For full post editing rights, please reply to this thread. Thanks!
For tips on using the forums please visit the following page: Forum Tips Be sure to check out Threaded View!!!
facebook users, please become a fan of AudiWorld's page
We've gotten complaints about spam/virus Private Messages. Any such messages are completely bogus, and should be ignored completely. Read more here.
I have a 99 A6 with codes 16806, 16816,(Main cat 1&2 efficiency below threshold, Misfire Cyl 2&4 16688,16686. I have a vag scanner from Autel. I have put new plugs, wires, and coil pack in about a year ago but haven't driven very much. Maybe 1500 miles. Also front O2 sensors on both banks. I reset the light and drove for about 70 miles and light came back on and was blinking. definetly misfiring. Have had many issues with the coil pack going bad very quickly. Tried different brands and so far not much luck. What is causing this and are the cats bad. Have about 135000 miles on car.