Dreaded black smoke

[EthelredS]

That’s interesting - but no all original

[CitROeNALD]

Yep, it's the kind of thing that goes undetected, no codes or anything. But it stops the DPF being maintained as one of the parameters the computer needs is outside air temp.

So if it is non-functional, the DPF can block up pretty quick and no indication why.

But, it sounds like yours is operating correctly.

[Rp0thejester]

I'm now thinking sensors after the dpf