6D err 30 message only 1 month old

[Kolourl3lind]

err30 ?

What's does that mean and how do I fix it

[ebiggs1]

Error 30 is undefined on my 1 series cameras and I suspose it is on the 6D, too.

What lens did you have on it.  If it is a 3rd party lens, that is the problem.  Try a new SD card or low-level format it.

Charge the battery.  Do all the 'normal' stuff as one may be at fault.

[TCampbell]

If this article is applicable to your camera then you need to call Canon support:  http://www.learn.usa.canon.com/resources/articles/2012/eos_error_msgs.shtml

According to the article, an error 30 indicates a problem with the shutter.  This is not likely something you will be able to clear yourself.