Intermittent P0022 Code. Hi Scotty I am following you since years and appreciate all of your help. I have 2006 MB C230 Sedan . I always kept it maintained with scheduled maint and it ran without a problem. Now I get intermittent P0022 code. I always changed oil less than 10 K miles with Mobil 1. It is running great and I don't want to throw it away due to being old. Can you advise on this ?