Thanks for the response. So i've replaced the MAP sensor and also the vacuum line going to it for good measure. The electrical connector was clean too. I clear the code, but it comes back after a few weeks.

Is there anything i can do to clean/test the MAF?

Hi guys. I know this post is a bit old but I was wondering if anyone solved this issue? i'm having the same exact problem with my '04 s60 and read that there is another baro sensor mounted to the ECM. A little hesitant to spend the money without knowing for sure....

Did you fix this problem?