Hello people
I just recently bought a 2007 g35 sedan that has 138k miles and on it that doesn’t start. The car is throwing a p0335 p0345 p2127 p2138 codes. Been trying to crack at for about two weeks can’t really figure it out. Been trying to read around the forums to get some ideas but a lot of things check out. I checked compression on all 6 cylinders (engine is vq35hr) and they all have compression above 150psi. Next I checked fuel and the fuel pump is priming and I unbolted a fuel line to see if there’s pressure and gas comes out every time I prime the fuel pump. Also looked at the crank sensor. Ended up buying a new one from the dealership even though it looked like I didn’t need it but correct me if I’m wrong but isn’t there supposed to be a O-ring on the crank sensor? The old one didn’t have one. Anyways could really use some intel all help is much appreciated

 

Looks like you could use a Service Manual. Also, check HERE for your ECM update if there is one. If there is one, you can follow this guide to update at home: Guide for Reprogramming Updates to your ECU
It's not easy to diagnose a car over a forum reply, so dig into that manual and test stuff out before you waste more money.
Check all grounds, sensor plugs and crank and cam sensors should be Denso only. Long and rough restarts.

 

The Camshaft Sensors can cause a no-start. I would start there and change all of them. Considering you checked the compression, I assume you're mechanically inclined. Easy to do!

 

Update those forums saved me. Turns out where the car was hit in the front I looked right behind it there was a bunch of wires ripped up that run to the refrigerant sensor on the ac condenser. According to the forum that sensor was the one throwing up all those codes. Sodderd them up and the car started right up. Appreciate the help seriously

 

wondering if you got this fixed ? 🤞🏼