When your 2022 Nissan Maxima displays the P0305 code, the engine control module has detected repeated misfires in cylinder 5. The 2022 Maxima continues with the 3.5L VQ35DE V6 producing 300 horsepower. With six cylinders, P0305 is a legitimate diagnostic code.
2022 Maxima Powertrain
The 2022 Maxima uses the long-running VQ35DE 3.5L V6, a proven naturally aspirated engine known for smooth power delivery. This engine is paired with Nissan's Xtronic CVT for optimal efficiency. Note that 2023 was announced as the Maxima's final model year, making the 2022 one of the last.
Cylinder 5 Location
On the VQ35 V6, cylinder 5 is on the rear bank (toward the firewall) in the center position. The transverse engine mounting makes access challenging, often requiring removal of intake components.
Common Causes
Spark plug degradation can occur at higher mileages. Ignition coil failure at cylinder 5 is possible. Intake manifold gasket leaks can affect individual cylinder air-fuel ratios. Fuel injector issues may cause lean misfires. On newer vehicles, loose connections from assembly work are also possible.
Diagnostic Process
Read all diagnostic codes and freeze frame data. Access cylinder 5's spark plug and inspect condition. Test the ignition coil. Check for vacuum leaks around the intake. Verify fuel injector operation at cylinder 5.