Engine Error
P0455
Evaporative Emission System Leak Detected (Large Leak)
Severity
Medium
Symptoms
Strong fuel smell, check engine light, failed emissions test
Common Causes
- Missing gas cap
- Disconnected EVAP hose
- Stuck open purge valve
- Damaged fuel tank
How to Fix
- 1 Install new gas cap
- 2 Reconnect or replace EVAP lines
- 3 Replace purge valve
- 4 Inspect filler neck
Estimated Repair Cost
USD
$30
–
$600
Purge valve: $100 - $250; EVAP lines: $100 - $500