I recently took my 2006 g35 sudan in for an emissions test and they were unable to get it to connect to the computer. I tried another emission place and the infiniti dealership, same issue. The infiniti dealership replaced the ECM, however that did not fix the issue. Now they want to try replacing the body control module ($1336), but they aren't sure that will even fix it. Has anyone had this problem before?

car has 79k miles, the ECM was covered by warrantly. The BCM is not.

Thanks for any help.

 

Can you hook and obd2 scanner up to it?