Check engine light, code p0011?

I have a 2010 4yl manual and last Friday I was driving and while slowing down for a red light I noticed the truck vibrating excessively (I felt it threw the shifter), it stopped when I accelerated and didn't do it anymore. Yesterday I was slowing for the same light and it done the same thing, this time the check engine light came on. Checked the codes and I has 1, p0011. Cleared the code and drove it for about an hour and it come back on. What do you think might be causing it? Maybe a oil control valve like a lot of the 6cyl trucks? Any help would be appreciated. Thanks.

 

http://engine-codes.com/p0011_toyota.html

 

oil control valve

http://www.tacomaworld.com/forum/2nd-gen-tacomas/244070-85000-miles-engine-code-p0011.html

 

Thanks for the replies guys