do you have aftermarket intake? also check your tubing coming into the intake/stock intake box. especially on the stock intake box its comming to pinch the one 1/4 hose and pop that code. I popped that code after doing a serpentine belt on my buddy's s2000, didnt put the solid black cover on correctly and popped that code, I hear this code pops for the charcoal canister as well... i'll look into it more for you but that off the top of my head, good luck!