The PCV (positive crankcase ventilation) valve in the 2GR-FE 3.5 liter V6 engine of a 4th generation (2013, 2014, 2015, 2016 & 2017) Toyota Avalon should be checked frequently and changed every few years or about 30,000 to 60,000 miles. Check out my DIY instructions for the procedure (with the compatible replacement part numbers) by clicking on the text link or thumbnail image below.
2013-2017 Toyota Avalon PCV Valve Replacement Guide
