In-Tech,

Thanks for the help. I have access to a copy of J1979, and had seen the different modes listed before. That was why I figured that I needed to understand how mode $06 and $07 worked. I have never heard of J2190, but need to find a copy of it to read too.

One more quick question, as this might help clarify things. I am trying to better understand how the OBD II plug-in emissions check works when you get a car inspected. Reading about what gets checked, the first things are the VIN # any OBD II codes. The next part I believe is the monitoring results. This is where I am trying learn what is getting checked, and how it is reported. I know for say EFILive, they have a System Readiness Test results tab that you can click. It shows you the different monitors and if they are supported or not ... and if they are supported, if they are ready or not. Would these results still come from a mode $06 / $07 request? Or is there a different thing that is being checked?