Diagnostic Trouble Code
P0455 — EVAP Emission Control System Leak Detected (Large)
EVAP Emission Control System Leak Detected (Large)
Definition
A large leak has been detected in the EVAP system. This is typically a gross leak — something obvious like a missing gas cap or a disconnected hose.
Common Causes
- Gas cap missing, loose, or severely damaged
- Disconnected or broken EVAP hose
- Cracked charcoal canister
- Fuel tank filler neck crack