Check out this website;
Here you will find all the error codes for the climate control.
You will find instructions on how to do a 'self test mode' (which you have just done), and also how to turn your climate control to 'monitor mode'. Monitor mode is a really cool because it allows you to do things like, check cabin temperature, outside temperature, engine temp, solar sensor,fan speed, blend flap open angle and more.
I keep a print out of this web page in my workshop manual. It comes in really handy.