Markp1991

Hello hopefully someone can shed some light on this.. We have a 118 1.6 turbo 2013 & the engine light has came with full performance not available. Plugged in a scanner & up it came cam sensor, I replaced both along with a new set of coils & the fault is still there. It says bank a (inlet) is faulty.. Start the car & it’s juddering/misfiring so obviously can’t drive it until it’s sorted, please help!!