Hey. 2007 chevy cobalt 2.2l ls..... I just replaced the cylinder head with a refurbished one... it came with the valves and cams alreqdy installed ... i ziptied the chain to the sprockets so i did not have to mess with timing... after everything is installed the car runs mint. No ticking nothin. But i keep getthing this code P0016 any ideas ?

 

Are you sure you put the crankshaft position sensor back on right?