P1416 - Port Air Circuit Malfunction/ (AIR) System Bank 2 Look at your emissions sticker under the hood, does it say anything about California Emissions? I think this code pertains to that. In any case, bank 2 is the passenger side of the engine, and the AIR system usually has something to do with the exhaust. Look for broken hoses, vacuum lines, leaking gaskets, anything that could cause air to escape. Hope this gives you an idea. Check out
www.troublecodes.net for more information.