hi, issue with my 2016 skoda 1.2 epc warning, Seams like Arnold cark has said the diagnosis is that 2 injectors have failed which i think is nonsense, so 2 new injectors later Arnold clark still say there is a fault, . Do injectors fail at the same time when the car has done 28.000 and just out of warranty. Is it possible to swap injectors without coding to rule them out. ?

Swap away. No problem there, but the intake manifold needs to come out to do so. 

What error codes were there.?

hi , thanks for the reply,  i dont know the codes yet but i will find out tomorrow when i go the garage.  Arnold clark are very poor especially after the new injectors has failed to solve the problem, which they will try and bill me . £1000 !!  I am going to ask for the diagnosis print out prior to the change and a print out after . so logically swapping injectors could be waste of time . but to prove the original injectors are good swap to the other cylinders.   I was going to ask if they have the tech to check waveform of each injector,.  That said i do not believe the injectors are faulty