CEL code P2441 is secondary air injection system valve stuck closed. I am thinking it has to do with the EGR system (04 GTS). I have a custom CAI with build-in nipples for both vacuum hoses attachced to the intake tube (similar to way they are attached to the stock airbox). This CEL is not listed, so I think the car needs to go to the dealer for inspection. However, I thought someone in here may know this CEL for the Celica. Any info is appreciated.