Rick's Free Auto Repair Advice

Posts Tagged: Gross Leak

P0455 code: What it means and how to fix it

Learn how to diagnose and fix a P0455 code — Evaporative Emission Control System Leak Detected (Gross Leak) If your vehicle’s check engine light is illuminated and you retrieve a P0455 code, that means you have an issue with the Evaporative Emission (EVAP) Control System. This system is designed to prevent gasoline vapors from escaping into the atmosphere. A P0455 code specifically points to a leak detected in the EVAP system. The Evaporative Emissions system applies a vacuum to the fuel system after you fill with gas. If the system … Read More


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