P0455 Honda Cr-V
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 Honda Cr-V 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 Honda Cr-V.
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 Honda Cr-V.
Common Causes on Honda Cr-V
- Gas cap missing or not sealing
- EVAP canister vent shut valve stuck open
- Fuel filler neck corrosion creating large vapor leak
- Large EVAP vapor line disconnected at charcoal canister
- Fuel tank seal failure at pump module
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 Honda Cr-V
CR-V and Pilot are prone to fuel filler neck corrosion in cold climates. This is a well-documented Honda issue causing P0455.