09 G37 already replaced camshaft sensors yet it still codes them. The wiring looks good too. How do i check the cam phasers?
if i cant fix it ill sell it or part it out . Lower Al.

 

If it’s still flagging cam sensors after new sensors and decent wiring, I’d start suspecting timing control (phasers/solenoids) or oil pressure. On the VQ37, check the VTC solenoids first: pull them, clean the screens, and test resistance/12V actuation. For the phasers, use a scan tool to watch commanded vs actual cam angle at idle and during a light rev; if one bank lags/sticks, that phaser (or oil feed) is suspect. Also verify oil level/viscosity and pressure.