Cal. Penal Code § 538

Every person, who, after mortgaging any of the property permitted to be mortgaged by the provisions of Sections 9102 and 9109 of the Commercial Code, excepting locomotives, engines, rolling stock of a railroad, steamboat machinery in actual use, and vessels, during the existence of the mortgage, with intent to defraud the mortgagee, his or her representative or assigns, takes, drives, carries away, or otherwise removes or permits the taking, driving, or carrying away, or other removal of the mortgaged property, or any part thereof, from the county where it was situated when mortgaged, without the written consent of the mortgagee, or who sells, transfers, slaughters, destroys, or in any manner further encumbers the mortgaged property, or any part thereof, or causes it to be sold, transferred, slaughtered, destroyed, or further encumbered, is guilty of theft, and is punishable accordingly. In the case of a sale, transfer, or further encumbrance at or before the time of making the sale, transfer, or encumbrance, the mortgagor informs the person to whom the sale, transfer, or encumbrance is made, of the existence of the prior mortgage, and also informs the prior mortgagee of the intended sale, transfer, or encumbrance, in writing, by giving the name and place of residence of the party to whom the sale, transfer, or encumbrance is to be made.