A P0306 diagnostic trouble code on your 2022 Infiniti QX60 indicates a misfire detected on cylinder 6. The 2022 QX60 features an all-new 3.5L V6 engine (VQ35DD) producing 295 horsepower, making this code completely valid for your vehicle.
The Redesigned 2022 QX60
The 2022 Infiniti QX60 was completely redesigned with a new 3.5L direct-injected V6 engine (VQ35DD) replacing the previous generation's VQ35DE. This modern engine features direct injection for improved efficiency but can develop intake carbon buildup like other DI engines.
Common Causes of P0306
- Ignition Coil Failure: Coil-on-plug degradation
- Spark Plug Wear: Worn electrodes or contamination
- Fuel Injector Issues: Direct injector failure or clogging
- Carbon Buildup: Intake valve deposits from direct injection
- Vacuum Leaks: Intake manifold or gasket issues
- Low Compression: Valve train or piston problems
QX60 V6 Layout
The transversely-mounted V6 positions cylinder 6 at the rear of the front (firewall) bank, making access challenging.