City News Service reports Dykstra is accused of exposing himself to several women who responded to ads for personal assistants and housekeepers between 2009 and 2011.
The 48-year-old former baseball star has been jailed since June in lieu of $455,000 bail on car theft and drug possession charges. He also faces bankruptcy fraud charges.
A pretrial hearing is scheduled Oct. 5 on the indecent exposure misdemeanor charges.