So the solution is flashing network_fix_xt1033.zip file from twrp recovery and after that your Dual sim card will be detected in Cm13 rom for moto g 2nd gen.If you did’t install the unofficla Cm13 rom for Moto g 2dn gen 2014 then you can Download CM13 rom for moto g2 from here.
Follow below steps to fix sim card not detected in Cyanogenmod 13 roms for moto g2 2014.
#How to fix Sim card not detected in Cyanogenmod 13
2.Now place the Network fix zip file in sd card.
3.Now reboot to Recovery mode and install the zip file from recovery
4.Now Clear cache and Clear Data.
5.Reboot your device Done !