The 2020 Nissan Pathfinder features the 3.5L VQ35DD V6 engine producing 284 horsepower for capable family SUV performance. When P0306: Cylinder 6 Misfire Detected triggers your check engine light, your Pathfinder has identified combustion problems specifically in cylinder 6.
Pathfinder VQ35 Engine
The Pathfinder's VQ35DD uses direct injection for improved efficiency compared to earlier VQ35 variants. Cylinder 6 occupies a position on one bank of the 60-degree V6. Direct injection provides precise fuel delivery but can allow carbon buildup on intake valves over time.
Common P0306 Causes
Ignition coil degradation from heat cycling affects cylinder-specific spark delivery. Spark plugs approaching service intervals produce weak ignition. Direct injection allows carbon accumulation on intake valve backsides. Fuel injector issues disrupt proper atomization. Vacuum leaks create lean conditions in specific cylinders.
Diagnostic Procedure
Scan for all diagnostic codes to understand the complete picture. Access cylinder 6 and inspect ignition components. Remove and evaluate spark plug condition against mileage. Test fuel injector operation. On higher-mileage examples, assess carbon buildup potential. Perform compression testing to verify mechanical health.
Family SUV Reliability
The Pathfinder's VQ35 engine is proven across numerous Nissan and Infiniti vehicles. P0306 typically indicates serviceable maintenance items. Quality repairs restore full performance for family duty.