Yeah--pretty much every time I drive the car I wonder what random warning message might pop up. When I get no messages I feel pretty lucky but something usually pops up maybe every couple of weeks or sometimes sooner. The message disappears the next time the car is started.

Doug

 

The car fixed itself Friday morning when it saw me coming at it with tools and contact cleaner. I went a head and cleaned the three plugs on the TB and disconnected and re-installed the ABS unit connector. All was fine over the weekend and I finally got to drive it to work for the first time in 3 months. This thing is worse than owning a horse! Ha! Ha!

 

I'm having similar problems and am now thinking its maybe just dirty connectors.
do you have to actually remove the TB to disconect/clean/reconnect all the connectors?

 

No, they are easy to get at once you remove the intake plenum. I would suggest replacing the battery first. I have no explanation why mine started working correctly. All I know for sure is disconnecting and reconnecting the battery always fixed it for a short time, old or new battery.
Something else I had not mentioned before is I have to pull the car in and out of my garage every time I ride my motorcycle and I ride my motorcycle a lot. This may have ran the battery down to the point the system check was not happy. I know the new battery was not charged correctly at first and I did charge it a couple of time before things started working correctly. Battery's are like sponges when it come to charging them, maybe I finally got a deep charge on it?????