A P0306 diagnostic trouble code on your 2022 Infiniti QX80 indicates a misfire detected on cylinder 6. The QX80's powerful 5.6L V8 engine (VK56VD) produces 400 horsepower and has 8 cylinders, making this code completely valid for your vehicle.
The QX80's V8 Engine
The 2022 Infiniti QX80 uses Nissan's proven 5.6L V8 (VK56VD) with direct injection and variable valve event and lift (VVEL) technology. This sophisticated engine delivers strong power and torque for the full-size luxury SUV segment.
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
- VVEL System Issues: Variable valve lift system problems
- Vacuum Leaks: Intake manifold or gasket leaks
- Low Compression: Valve train or piston ring wear