hi the port is probably on the right side of the near the fuse box, each car has a different place so can't pin point you that, you need a obd scanner "a device" which i'm not sure if its available in Pakistan or not. using a software in the phone you can link the obd scanner to it and show the readings on the phone.
** you can override the code to turn off the error light, but this doesn't mean you've fixed the fault... it will still be faulty and won't work in a crash incident! 
my advice... get it checked professionally 
