So at lunch today, I got into my car to drive to get a bite to eat. Start it up, start driving it and then get an Engine Check triangle light and a Half-Engine Limp mode light. Since I'm in a mini, I have my trusted code reader. I do an Autoscan and it comes up with the following:

First category of tests (can't remember the title)
(didn't write the code for this one down) CAS Input Selector Lever, Part 6943806
Engine check
2D22 Not Present. Oxy Sensor after Catalytic Converter
2D60 Vanos Exhaust
2C58 Charging pressure control. Switch-off as Consequence

I was late to meet someone and it didn't look like it was going to blow up from those codes so I drove on and had lunch. I got back in the car, started it up and the lights came back on. I started driving and within a minute or so, all the lights went off. On the way home, it started up fine and drove it home fine with no issues.

The car is now right at 65K miles. It is a 2011 Mini Cooper S..

Why would I get codes and then turn around and then get no codes with a self-healing issue. Anyone know what the heck is going on?

 

The codes will still be recorded, and would be accessible with a good quality reader, eg BMW dealership. However, they will no longer be “active”.

Probably what has happened is something has temporarily malfunctioned, and then “fixed” itself. I had this once with a vanos solenoid. Car was misfiring, lots of codes. After a few restarts the car came back to normal, and it never recurred. The solenoid was probably stuck open or closed, but with a few more actuations came back to life.

The same thing can happen with intermittent misfires, etc

 

That is weird is all that I can say. That doesn't happen with Toyota. lol