The charges for filing a false police report are just that -- filing a false report.  However, in order to know exactly what charges are in your warrant, it will be necessary for someone to take a look at the actual warrant.  I suggest consulting with a South Carolina attorney, who will be able to obtain more information about your charges, and who will also be able to arrange for your peaceful surrender, make arrangements for you to post bond -- or make bond arguments on your behalf, and begin to develop a strategy to defend these charges.  By taking these steps you will minimize your criminal liability and begin to work towards a favorable resolution to this matter.  Good luck.