This chick at work has a 328Ci and the check engine light was coming on. I used my Peake reader for her and it came up a code #12 (Camshaft sensor, exhaust cam). She said it doesn't come on that often, but I was wondering if that is something easy to replace and if so the location of it.
I'm good with VW's but not much experience in BMW's.
Any help would be appreciated to help her avoid a raping at the dealership.