I was convicted of dui under the age of 21. It was a pbj conviction.
No, you cannot expunge a DUI PBJ disposition. A PBJ is not, by the way, a conviction, and the fact that you were granted the PBJ means you are not guilty of the DUI (even if you pled guilty or were found guilty after trial). It will, however, continue to show on a criminal background check as a DUI for which you received a PBJ disposition.