Usually when you get a whole fruit salad of codes it's a voltage problem.

Not sure if e70 has the extra voltage regulator the V8 e53 had (IVF I think it's called in the ebox), but when those go on e53 you will get all sorts of misbehaving.

Update your profile shows 3.0 2001 that's why I asked above which chassis/engine.

__________________
2011 E70 • N55 (me)
2012 E70 • N63 (wife)