I've played with our OBD-II interface a lot, with Torque and other tools. Any OBD-II software can pull most of the common stats from our car, and read/reset the normal CEL/MIL stuff. However, there's a whole other mode (or two) that's OEM-specific and none of the aftermarket tools know how to read them properly. The non-standard codes include stuff like working outputs for Oil Temp, Trans Temp, several detailed bits of information about timing and VVEL operation, etc. I actually have a partial list of hex codes for these that I uh, "found" somewhere, but I have been unable to crack using this mode from a tool like Torque (yet...).
Nissan's factory Consult III tool that the dealerships have can read these OEM codes, and they've licensed it to a few others (e.g. UpRev's Cipher can read them as well). I highly doubt that the product in the t-mart link does anything special in this regard, unless it comes with some licensed software.
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