OBD2 works with ScanMaster but not TechStream

On the opening screen of Techstream, there's a drop down menu for VIM select. Does your cable show up in the list of VIMs?

I have never tried using a ELM 327 based cable with Techstream, wouldn't know if it had the correct driver support.

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Techstream requires a dongle that meets the J2534 standard.

As it turns out, J2534 is a standard for a software interface, so it's not really the dongle hardware that matters, as long as it can do the needed things, and comes with a J2534 driver (DLL file) that makes it do them when Techstream asks.

But it's up to each dongle hardware manufacturer to supply such a DLL that works with their dongle.

I've heard (somewhere in the forums here) that the Mini-VCI is, on the inside, ELM 327 based, so its driver might work, or partially work (which is kind of what a lot of Mini VCIs do anyway) with some other ELM-based dongle. I haven't personally confirmed any of that.