I have a idea reach under the tank and unplug the PCV if its like the PC3 I just cut out of mine (because I think it went bad) and installed a PCV then its only two plugs (with no auto tune) and check the pins for damage and then plug your engine harness and fuel rail harness back in like OEM and see if it is still there. if its gone the either the PCV is bunk or might have been sitting on the shelf for quite a while. It might need a firmware update. some of the early ones had some issues.