DRich,
Thanks for your reply!
The air mass sensor is less than a year old - It was new (not rebuilt) so, I'm leaning away from that being the problem.
Not sure about the LH module itself (Can I borrow yours?

)
I spoke briefly with the tech today, he told me what I already knew, which is that there is no CAN communication. Too bad it doesn't get more specific than that (ie: the CAN is not talking with the LH module). Maybe it does get more specific, I just don't know it. I still don't know what Code 8 on Pin 17 is either.
I'm not trying to take the work away from my tech, I just want to be able to quickly point him in the right direction (he is trying to squeeze me in as it is).
PS the LH module does not appear to be cheap either.
Thanks again!
-Larry