When your 2020 Nissan Murano displays the P0305 code, the engine control module has detected repeated misfires in cylinder 5. The 2020 Murano uses the 3.5L VQ35DE V6 producing 260 horsepower. With six cylinders numbered 1-6, P0305 is a legitimate diagnostic code.
2020 Murano Powertrain
The third-generation Murano uses Nissan's proven VQ35DE 3.5L V6, a naturally aspirated engine known for reliability. Paired with a CVT transmission, this setup provides smooth and efficient power for this mid-size crossover. No four-cylinder option exists on the Murano.
Cylinder 5 Location
On the VQ35 V6, cylinder 5 is located on the rear bank (toward the firewall) in the center position. The transverse engine mounting and tight engine bay make access to this cylinder challenging.
Common Causes
Spark plug wear is a primary cause, especially approaching 100,000 miles. Ignition coil failure can occur at individual cylinders. Intake manifold gasket issues can affect specific cylinder performance. Fuel injector problems may cause lean misfires. Vacuum leaks around the intake affect air-fuel ratios.
Diagnostic Process
Read all codes and freeze frame data. Access cylinder 5's spark plug on the rear bank and inspect for wear or fouling. Test the ignition coil. Check for vacuum leaks using smoke testing. Verify fuel injector operation.