[Insignia 2014 cdti rumbling/misfire when accelerating]

Try glow plugs.

[code 2282]

I've been having the usual air leak between air intake and the throttle body.  I did have a split in the boost pipe which was replaced . Problem was that it kept going into limp mode randomly and giving code 2282. After replacing the turbo boost valve and the dpf pressure sensor with no joy I was getting frustrated. Some one suggested replacing the MAP sensor which has finally fixed the problem. Just goes to show some codes send you on a wild goose chase. So if you're getting this code and you haven't got an air leak try this out.