i have this peugeot 1.6t i dont think air cond unit is coming on car drives well has bit of tapper noise thou and pulley noise when cold will any Peugeot professionals will be able help me i did a rocker cover change seemed to fix the real hard ability to remove to filler cap when running so pvc value seems to be better but just worried about this code error and i also have a p2279 code also please help me .thank u