Hi,

I have a 04' g35 coupe with 104k miles and have owned the car for 4 years. Recently I have been running into the p0300 code which is indicated by the SES light which flashes and then disappears. I will usually get 2 of this same code(p0300 I did not receive anything else). I have replaced all coils, spark plugs, driver side camshaft sensor, valve covers, knock sensor harness. The only work I did personally was the coils, plugs and cam sensor. I am running out of places to look as the gaskets are brand new as well. Any advice would be great and where to look next.

 

Instead of throwing parts at it just take it to Nissan for a diagnostic so you know EXACTLY what the problem is.

 

Moderator EDIT: Banned for botting.

 

It's almost always the sub harness, very common for the insulation on the wires to crack/fall off and short out.

https://www.z1motorsports.com/oxygen...ss-p-5833.html