Klein, best known for his role as Oz in the popular teen movie, was arrested after his vehicle was seen weaving in and out of lanes on the westbound 101 Freeway in Sherman Oaks, Calif. Police could not release the 31-year-old actor's blood alcohol level, but a spokesperson added that it was over the legal limit.
The actor was taken to Los Angeles Police Department's Van Nuys station following the arrest. He has since been released without bail, according to the Los Angeles Times.
Klein's dog was in the car at the time of the arrest and was retrieved by a friend.
Klein was also arrested on DUI charges in 2004, according to police.