P0455 Nissan Pathfinder
EVAP System Leak Detected (Gross Leak) · Powertrain Code · Medium · Repair: Easy
What is P0455?
A large leak has been detected in the EVAP system. Check gas cap first — if secure, look for disconnected or cracked EVAP hoses, a stuck-open purge valve, or a leaking charcoal canister.
When the Nissan Pathfinder triggers code P0455 (evap system leak detected (gross leak)), it typically points to an issue in the powertrain system. Below you'll find the most common causes, symptoms, and repair options specific to the Nissan Pathfinder.
This repair is rated easy, meaning basic tools, no lift needed.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Nissan Pathfinder.
Common Causes on Nissan Pathfinder
- Gas cap missing or not engaging
- EVAP vent control valve stuck open
- EVAP vapor line disconnected or severely cracked
- Fuel filler neck seal failure
- Charcoal canister cracked or damaged
Symptoms
- Check engine light illuminated
- Noticeable fuel smell near vehicle
- Gas cap warning light on dashboard
- Failed emissions test
- Fuel economy noticeably decreased
Notes for Nissan Pathfinder
Rogue, Pathfinder, Kicks, and Murano EVAP vent control valves are the most common cause of P0455 after ruling out the gas cap.