Cel p0411
 

Per the 2009 workshop manual: "Secondary air injection system incorrect upstream flow"

I have not done any intake/exhaust modifications to the car. The only modifications I've done is to add lights.

All lights still work - so there's not a fuse popped.

What else do you think could cause the problem - because being an actual problem.

Edit:
A piece of the puzzle, the CEL popped up on the morning that South Carolina has it's ice storm. I'll take her in sometime soon.

The main reason why I made this post is because another thread (Yes, I searched :) ) mentioned the same CEL error was caused by blue tape. I was hoping there would be another off the wall reason.

I would start by checking all the connectors to the air pump.

Also you can leave the hood open, start the vehicle cold and listen/feel the air pump. It should stay on for like 30 secs or so.

Air pump was replaced.

what if air pump wasnt replaced and the guy before you suppose ofly added aftermarket headers will that affect anything