I got a 2007 350z with the vq35hr in it.

I got off a lot with just one code p0024. Autozone said 1sensor. After changing camshaft sensor got p0014 and p0024. Later even got a p0304 I believe it was. They only come on after driving while on freeway. I get oil light at long idle as well.

They said just a sensor. I replaced 4 camshaft sensors with the Densos OEM which were on it. I changed the oil, oil filter, oil pressure sensor, pc, belt, 6 spark plugs, the upper radiator hose with new fluids. I even took out my VVT solenoids bank 1,2 to test make sure circuit was working which it was they open and closed with the clicks and then I cleaned them really good sounded even better so put back in.

I'm thinking the oil pick up and oil pump for low pressure at idle.? Oil was really bad when changed it as in really dark. An maybe that could be what's throwing off the codes and cause the camshaft sensors to go off?. I see how the HR had a oil galley gasket issue but I haven't taken off the pan to find out. When I changed the spark plugs no oil in there. Maybe just dirty spark plugs but I just think have never been changed. Figured I'd get that answer if I saw gasket in the pan when changing the oil pump. The car drives I wanna say 90% better from when I first got so I just don't get why the codes come on. I have erased and tried the car reset thing but not sure if did right. I haven't tried the unplug and use horn or lights to drain computer completely though. So just confused on if I'm just missing something

 

I don't think Densos is OEM. Last time I checked, the OEM sensors were Hitachi.