Why does my pickup blow out white exshauts when it is running

Question

My pickup when running blows white  exhausts out and the code P2452 shows up and I think it is burning oil

Answer 1

P2452 Diesel particulate filter pressure sensor A circuit

If you are in high humidity or in a rain, you can expect to have white smoke and it has nothing to do with the exhaust filter. If you are not in a humid environment or rain attempt to do a regeneration. also take any notice of any coolant loss. Just for P2452 to set the filter may be plugged. it also good to check for any cracks or leaks at the filter,