DTC P0455: Evaporative Emission Control System Leak Detected (Gross Leak); DTC P0456: Evaporative Emission Control System Leak Detected (Very Small Leak) [08/2015 - 08/2018]: Description
WARNING: This page is about a different car, the 2018 Toyota Sequoia, 2017 Toyota Sequoia, and 2016 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
The description can be found in the EVAP (Evaporative Emission) System.
Refer to DESCRIPTION
Refer to EVAP System [08/2017 - 08/2018]