The PCV (positive crankcase ventilation) valve in the VQ35DE 3.5 liter V6 engine of a 4th generation (2013, 2014, 2015 & 2016) Nissan Pathfinder should be checked or changed every 30,000 to 45,000 miles. Take a look at my DIY instructions for the procedure (with the compatible replacement part numbers) by clicking on the text link or thumbnail image below.
2013-2016 Nissan Pathfinder PCV Valve Replacement Guide
