CEL P2440 Code, any had this before?

I searched the forum and didn't see anyone with this issue before. I got in my car the other morning and the CEL went on and I turned on the car. It wasn't on when I parked my vehicle last night and it seems odd that I would have a CEL when I only used battery power the day before. My OBDII w/ Torque say this: P2440 - Powertrain. Secondary Air Injection System Switching Valve Stuck Open bank1.

Any insight? Is this something a DIYer can fix?

Thanks everyone.