Emissions
Code P0455
EVAP System Large Leak
Plain English Meaning:Large fuel vapor leak detected
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Yellow: Drive with Caution
Fuel vapor leaks can be hazardous
P0455 Symptoms
- •Strong fuel smell check engine light
Most Common Causes of P0455
1Loose gas cap broken EVAP lines
P0455 Repair Playbook
Required Mechanic Tests
A qualified shop should perform these tests before replacing any parts to ensure they aren't guessing:
Smoke test inspect tank and hoses
Typical Fix Paths & Estimated Costs
Fix leaks $50–$600
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Parts for P0455 Repair
Common replacement parts for emissions codes. (Paid links)
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