HELP! 2nd check engine light
Okay, so I just bought my A4 a few weeks ago, and since then I have thrown a check engine light twice. The first time it had something to do with a "secondary air filtration". I haven't checked to see why I threw the second one yet because it just happened a few hours ago. I have been told that any time you throw a check engine light it has to do with an evap issue like a bad gas cap, or one that's not tightened properly for instance. First of all, what's the secondary air filtration..is it related to the turbo? Should I be very concerned about this? Is it pretty common?Thanks.
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