Learn how to diagnose and fix an evap leak, and whether it is safe to drive with one. Refer to the table below for more information 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
Evap Leak Codes
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.
Learn what the code p0442 means and how to fix it
The code indicates a small leak in the evap system, which prevents fuel vapors from escaping Find out the common causes, symptoms and how to test the evap system components. A large evap system leak could be why your check engine light is on Learn what causes code p0455, how it affects your car, and what it takes to fix it.
The leak is typically caused by a damaged or loose seal, hose, or fuel cap within the evap system If left unaddressed, the p0456 code can trigger the check engine light, and the vehicle may fail an emissions test. A faulty gas cap (loose, cracked, or with a worn rubber seal) breaks this loop, allowing vapor to escape and causing the car’s computer to detect a large leak (p0455). Different leak codes have different meanings, which is helpful in determining the cause and severity of the leak
