Here's a portion of a warning letter a friend recently got for running adsense on an autoblog. I would guess that if he hadn't removed the ads they would have banned him. Can't say for sure though.
------------------------- Hello, While reviewing your account, we noticed that you are currently displaying Google ads in a manner that is not compliant with our policies. For instance, we found violations of AdSense policies on pages such as -----. Please note that this URL is an example and that the same violations may exist on other pages of your website. It is important for a site displaying AdSense to offer significant value to the user by providing unique and relevant content, and not to place ads on auto-generated pages or pages with little to no original content. Your site should also provide a good user experience through clear navigation and organization. Users should be able to easily click through your pages and find the information they are seeking. Please review Google's Webmaster Quality Guidelines ------------