So I know this CEL code has been posted a million times, but I am not getting the code after installed a CAI. I have the factory intake and it came on one day after I was about to install my cheap EBAY CAI (which I decided not to install seeing it was a POS).

I took the factory airbox setup out and five minutes later reinstalled it the exact same way it was taken out. The next day (once the car had a cold start) the CEL came on.

The secondary air pump still starts, sounds normal, and runs for about 8 seconds then cuts off. I am just trying to figure out how to troubleshoot it with the stock airbox setup, bc my honda dealership is absolutely worthless.

 

Check the vacuum lines again.

https://www.s2ki.com/forums/index.php?showtopic=105368

Make sure they are not reversed.

 

When I did mine one of the lines under the intake manifold came off and it was kinda a bugger to see. I'm sure you already have, but double or triple check all the lines connections.