Warrants don't mean a whole lot unless the person gets stopped by a cop. My son had 3 warrants for about 8 years. He just never happened to get stopped and the cops are too busy to go out looking. He'd gotten sober, was going to community college and we just happened to be pulled over on the freeway when a highway patrol came along to ask if we were okay. He ran my DL & took my son's info - needless to say my son got a ride to jail with the highway patrol.
I know all to well the codependency - I had it BAD with my son. Books (including Codependent No More), Alanon & Naranon meetings and constant reading (and occasional posting) here helped me to mind my own business.