Questions & Answers (D40 Diesels)
My 2011 D40 YD25 diesel is throwing codes 1021 and 102b, and going into limp mode where it loses a lot of power.
Previously it would throw code 1021 every now and then, which I would clear and it would be fine for a while.
Now when I clear the codes, they come back in a few minutes.
Any ideas...