What does the EVAP pressure sensor do?
What does the EVAP pressure sensor do? The EVAP. The fuel pressure sensor works in conjunction with a vehicle's evaporative control (EVAP) system, which captures any evaporated fuel before it leaves the fuel system. The sensor alerts the vehicle's computer to not only fuel tank leaks, but also to leaks in the EVAP system. How to fix the pressure sensor on a Silverado? This video explains how to replace the pressure sensor, part #AS302 or 16238399 to fix the evap code PO452. Also may fix PO446 PO453 and more? This is on a Silverado pickup, but also relates to many...