Cal Pen Code § 148.9 (2004)
§ 148.9. Falsely representing self as another person to peace officer
(a) Any person who falsely represents or identifies himself or
herself as another person or as a fictitious person to any peace officer listed
in Section 830.1 or 830.2, or subdivision (a) of Section 830.33, upon a lawful
detention or arrest of the person, either to evade the process of the court, or
to evade the proper identification of the person by the investigating officer
is guilty of a misdemeanor.
(b) Any person who falsely represents or identifies himself
or herself as another person or as a fictitious person to any other peace
officer defined in Chapter 4.5 (commencing with Section 830) of Title 3 of Part
2, upon lawful detention or arrest of the person, either to evade the process
of the court, or to evade the proper identification of the person by the
arresting officer is guilty of a misdemeanor if (1) the false information is
given while the peace officer is engaged in the performance of his or her
duties as a peace officer and (2) the person providing the false information
knows or should have known that the person receiving the information is a peace
officer.