So I recently got a check emmisions warning light come up on the dashboard of my 2012 Renault master. To figure out what was causing it, I bought an OBD2 scanner. After trying to connect with the van it is saying "link error". Any idea what could be causing that? The male and female ports don't seem to be connecting perfectly, but if I position it correctly, the scanner stays on and can run through the protocols but just always returns "link error". Any help would be much appreciated.