To answer this questions accurately, you would need to state the exact Penal Code Section with which you are being charged. Are you being charged with providing false or fraudulent information to a police officer? Perjury? It depends on the code section.
Cal Pen Code § 148.5 False report of felony or misdemeanor provides: (a) Every person who reports to any peace officer . . . that a felony or misdemeanor has been committed, knowing the report to be false, is guilty of a misdemeanor. (b) Every person who reports to any other peace officer,. . . that a felony or misdemeanor has been committed, knowing the report to be false, is guilty of a misdemeanor . . .
Penal Code 19 provides the punishment: ". . . [A] misdemeanor is punishable by imprisonment in the county jail not exceeding six months, or by fine not exceeding one thousand dollars ($1,000), or by both.