I have 2014 model 1.6 diesel crv , with 2 management lights on , after putting it on diagnostic it says egr fault , but i dont know which one i should replace , the low pressure one or the high pressure , any assistance would be very much appreciated

 

The DTC should tell you which one needs to be looked at
Yes, the DTCs are there to indicate where a problem might be
It doesn't mean to just go replacing parts
For instance, sometimes carbon gets into the EGR and sticks in a valve and keeps it open
Do the inspections first.