I saw this but all I know is that the obdii is a data port. I have never read it supplies DC, like usb. So I wonder if the data lines are fused. It would be unusual.
I have had experiences with the obdii not 'syncing' (?) or something. Sometimes I notice the Scangauge or Ultragauge I keep plugged into the obdii all the time acts a little strange. Sometimes it takes a while for it to turn off the display. Sometimes I have to unplug and plug it in again to 'sync'.
I hope this isn't something seriously wrong with the computer. That is what supplies the data.
But because this started with a battery replacement maybe it just needs some kind of 'cold boot' or restart.
The op doesn't mention if the car is operational but assuming it is the whole computer can't be bad. Hopefully the data line drivers aren't blown somehow. That also seems unlikely.
Hello all, I have searched the forums high and low for an answer to my issue, but I could only find reference to resetting the I-Stop, which my car doesn't have. I replaced the battery in my 2016 CX-5 yesterday. After installing it, i got two new maintenance codes, TPMS System Malfunction, and...