Juuju_o

Hey! I just bought a 2008 c300, and conveniently the check engine light is on for the secondary air injection system. I've heard this is a common issue, but I'm hoping for some input on the matter before I bring it to the shop. Thanks!

superangrypenguin

What input are you looking for?

Juuju_o

Input as in any recommendations on what I can do myself to figure out what the issue might be? Like I said I just bought this car so I'm not super familiar with it yet. Thanks

brettysetgo

This is a 20 minute video that goes over what you can do. He takes the whole pump apart, even.

Juuju_o

Awesome! Thx brettysetgo

brettysetgo

No problem. Post back with what you figure out - I'm currently trying to solve this on my 2008 C300 as well.

Juuju_o

I had a mechanic tell me that the cabin air filter is a common fix to this code too, so either that or the pump itself. Likewise, let me know what you find out! Good luck!