Authorities say Avary's car hit a telephone pole in Ojai on Jan.13. The crash injured his wife and killed passenger Andreas Zini, who was visiting from Italy.
The 43-year-old Avary has apologized for the accident. His lawyer has said the writer was grief-stricken over the death.
Avary and director Quentin Tarantino won the 1995 Academy Award for writing the screenplay of "Pulp Fiction." Avary also co-wrote the screenplay for last year's "Beowulf."