i have check engine lite on

Hello, there are several possible causes of concern here. The code comes on when the air switching valve for bank 1 of the V6 engine is stuck closed for 7 seconds or longer with the engine running. The valve could be binding, the electrical circuit driving the valve could have an issue, the air injection system piping could be restricted, you could have a pressure sensor issue or an engine processor issue. Lots to check into to troubleshoot, and a proper diagnosis needs to be performed. Good luck!