Has anyone had this experience? When I use the "scan" feature of my Scangauge II, sometimes the DTC code and/or freeze frame data will change on me. That is, I check it and it says "1 stored code" (without clearing it), then go back to "Gauge" and then check the scanning function again, sometimes the code has changed to something else! With the freeze frame data, sometimes it will even change as I'm scrolling through the different data fields. Very disconcerting....
I've this problem for over a year. My car will turn on the Check Engine Light after warming up on my first drive of the day, usually, not always, display P0000, and if I don't quickly clear it, then will start scrolling codes , most starting with U. When I do clear it with my scangauge, the light goes away for the day. Car runs fine. Found a link with some info, but no solution....: Scangauge: Showing Codes That Start With Letter "U" | PriusChat
That's not exactly my experience. It happened again the other day. The Check Engine light came on and I pulled the code right away with my SGII and it said P1116. Out of curiosity I did not clear the code. About 10 min later I checked again and it said P0000. Incidentally, about 10 min after that I had another P0000 (I'd cleared the first) and got the triangle of death and limp mode -- this is related to my Enginer PHEV converter, though. Anybody have a similar experience? My SGII is the older 3.x firmware.
I have a SGII with 4.05 rev. When I had my car in to the dealer for Front and Rear Brake TSB work I disconnected the SGII. When I picked up the car I re-connected the SGII and checked for any DTC's since I would think that at least one or more DTC's may have been thrown during the brake work and then cleared. IIRC it came back with no codes and then began scrolling through a long code list. The only way to stop it was to do a Default Reset on the SGII.
