I check my car for codes and what I found was this numbers 17956 N75 open circuit, 17938 camshaft short to ground, 17697 n249 short to ground, I being check the harness of this valves but could'nt find nothing bad, Im thinking on the fuse that runs all of this components, dont know if this could be the cause, or if all of the valve have effectivly fail, did anny one have a good idea of waht to check before start to buy all of this parts, something that I notice was that the n75 was marking 29-30 ohms to across the terminals this its the value marked on the bently manual, another question that I have if if the harness that manage all of this valves has a common ground and if its failing, could be this the cause of the failing codes

 

Finally found the soluiton to fix my fails codes, looks like the last mechanic that work with the car was messing with the fuses, cause after following the lines on the bently manual, I foun that all of this valves goes connected to the 34 fuse on the fuse panel, but when I was checking the fuse panel I found that I didnt have any fuse on this location, but funny thing I found a 10 amp fuse located on the haldex clutch, and surprise mine its manual, then I relocate the fuse to the 34 position and check the fail codes again and they where gone, yesterday I check the codes again and it was none, hope that this thread could help someone else