Ok, I got the COM and baud figured out COM5 and 9600. I know ELM is communicating because I connected in TunerPro and then closed out. I even unplugged and replugged after closing TP to make sure it wasn't "busy" before opening stterm.
Key on, engine running: I send "ATSP 2" and it shows in the list red with no response. Same thing with PIDs I tried: 0112, 0107, 010D. What am I doing wrong?
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