Mustang 2013 error codes

Servus! Had this posted earlier in the wrong forum, unfortunately! Up to now always diligently read and was often grateful for the many tips. Now I have a problem, which I can not correctly assign up to now. I drive a mustang gt from 2013, which has 60tkm and apart from a slight unround idle and quite rarely times with full gas the mkl flash, (not glow!) Lets and meanwhile takes no gas, after two seconds it disappears and everything is normal. Suit is also well. Now I have read out error codes P0113 P0103 P0300 P0301 I have cleaned the LMM up to now and checked it once, which seems to work. Spark plugs are changed. However, an ignition coil has a slight hair crack, is that relevant? I hope that he has no tune on it, but I don’t know. How could I test this without special tools? Fear that he has one, because when I buy from the previous owner a CAI and a larger throttle flap from bbk But it should have been imported by the USA at that time. Everything was also expanded and very dusty. And another question. About ebay I bought a heckspoiler for just under 250€ in gt500 style, this seems to be made of polypropylene, looks quite thin and hollow. I wonder if he can meet his requirement and keeps up with the weather in the long run (because of the cold, pp should become brittle quickly). If you need more information, please let me know. Thank you very much ! Lg Sascha