Code P0457
EVAP Leak Gas Cap Loose
Plain English Meaning:Gas cap loose or missing
Green: Safe to Drive
Very minor issue
P0457 Symptoms
- •Check engine light
Most Common Causes of P0457
P0457 Repair Playbook
Required Mechanic Tests
A qualified shop should perform these tests before replacing any parts to ensure they aren't guessing:
Inspect cap seal
Typical Fix Paths & Estimated Costs
Replace gas cap $20–$50
Parts for P0457 Repair
Common replacement parts for emissions codes. (Paid links)
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