I have an '04 Infiniti G35 coupe. Couple months ago, I got the dreaded p0011/p0021 code. Drove ok for a few weeks, but then I started experiencing low speed idle issues and stalling. Driving around a parking lot or stop and go traffic was really hard. Anyway LONG story short I have checked the circuits for both IVT solenoids and and they test fine. I replaced both cam sensors along with the crank sensor all with OEM. Codes and drivability issues come back. Finally went ahead and changed out both IVT solenoids and of course you know what happened (why else would I be here). What's next?

This is a remanned engine with about 10k miles on it so I do not suspect sludge or buildup of any kind. I did notice that the oil level was low before the codes from what I thought was a bad oil pan seal. I changed it out with a cork gasket and it's fine. I've let the car sit for 5 days and there is no oil from the pan at all. However when I drive, I can see oil from what appears to be front crank pulley seal, but I cannot confirm 100%. Now I keep an eye on the oil level and it is never 1/2 qt below the "F" line as checked by the dip stick. My question is can these issues somehow be related? I know that the IVT solenoids work off of hydraulic oil pressure so is it possible that somehow during driving the slight leak causes a loss of pressure around the IVT solenoids and causes the CEL?

Again, this motor has about 10k miles on it and I've done 4 oil/filter changes already 1 at 500 miles, 1 at 1000 (both conventional) then at 4,750 with Amsoil XL and again at about 9k. I didn't notice the oil leak and low oil level until AFTER the 3rd change because it was extended service oil so I never bothered to check. When I got around to it I was about 3qts low, but this was BEFORE I got any codes. Yes I pulled the pan and luckily didn't see any metal chips floating around. I'm a little confused as to what else could be the problem. Any help is greatly appreciated

 

any thoughts?