What does code P0455 mean?
A large leak is detected in the EVAP system, allowing a significant amount of fuel vapor to escape into the atmosphere.
OBD-II Code
P0455 — Evaporative Emission Control System Leak Detected (Gross Leak)
A large leak is detected in the EVAP system, allowing a significant amount of fuel vapor to escape into the atmosphere.
Common symptoms
- Strong fuel odor
- persistent check engine light
Possible causes
- Missing or loose fuel cap
- broken EVAP hose
- major line disconnection
Initial recommendation
Inspect fuel cap, main EVAP hoses and lines, and repair or reconnect any damaged components.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0455 with your vehicle's actual symptoms for more complete diagnostic guidance.
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