O'Neal, 47, is the son of actor Ryan O'Neal and late actress Joanna Cook Moore. He was convicted of firing a gun into an unoccupied vehicle nearly 20 years ago and of negligently operating a boat in a 1986 mishap that killed producer Gian-Carlo Coppola, the son of filmmaker Francis Ford Coppola.
The latest charges against O'Neal stem from an incident in San Pasqual, Calif., last August in which he crashed his vehicle head-on into another car.
O'Neal is scheduled for a sentencing hearing Jan. 12, E! News said.
He faces a possible four years in prison, the entertainment news Web site said.
O'Neal's film credits include "The Escape Artist," "April Fool's Day," "Assault of the Killer Bimbos" and "Ghoulies III."