Question

2009 Toyota Corolla 2.4L with P0455 code present, is the car safe to drive? check engine light is on

Answer 1

Yes it safe to drive, P0455 evaporative system gross leak detected, this can be cause by a unsecured gas cap. or missing gas cap. Just secure if you do not clear the code and the problem is with the gas cap it should clear once the evap monitors run,

Answer 2

P0455 TOYOTA Code - EVAP System Gross Leak Detected
Read more: https://www.autocodes.com/p0455_toyota.html