Hi all am new here and thought I woulda ask if any one can help with the above codes. Car runs fine for a while but will suddenly go into limp and throw the eml on with codes p2279 and p0299. Once codes are creased car runs ok again for a while and then will do the same. Any advice will be most greatful. I have had the car in at an independent mb workshop with no luck as yet. They are having it back on Tuesday but any ideas are welcome. Thanks