If your code was P0410 it refers to the Secondary Air Injection System. I have just dealt with this problem 2 days ago with the dealer. I was experiencing an intermittent check engine light, so I checked with my DRB reader and got the P0410 code. My dealer replaced the Secondary Air Injection System Relay which was $385 for the part plus another $300-400 for labour. Not covered under drivetrain warranty which I think is bull***t. I did not experience any degradation in performance while the code was present. My service rep could not explain (to my satisfaction) what this was for or why it wasn't part of the drivetrain. I hate them.