The code indicates a minor leak in the evaporative emission system that may cause a check engine light or emissions problems. In simple terms, it means the system has detected a large leak in the fuel vapor containment system Fault code p0455 indicates that a large (gross) leak within the evaporative emissions system has been detected and noted by a vehicle’s operating software
Evaporative Emission System (EVAP) Leak Detected - What To Do?
Simply put, this dtc indicates that a vehicle’s evap system is compromised in one way or another, allowing fuel vapor to escape into the atmosphere.
All mean the same thing
Technically, it stands for “ evaporative emission control system large leak detected.” let’s break that down Your car has an evap system Stop them from leaking into the air When the system has a big leak—think a loose gas cap or cracked hose—the ecu notices.
Learn what an evap leak is, why it's harmful, and how to diagnose and repair it at home Find out the common symptoms, causes, and solutions for an evaporative emissions leak. The p0455 code means your vehicle has detected a large leak in the evap (evaporative emission control) system, which is responsible for capturing and storing fuel vapors before they escape into the air While this isn’t an issue that will leave you stranded, ignoring it can lead to wasted fuel, a persistent fuel smell, and increased emissions.
P0455 code gets triggered when the engine control module (ecm) detects a condition in the evap control system that indicates
A fuel vapor leak, or a lack of purge flow in the system
