Emissions
Code P0442
EVAP System Small Leak Detected
Plain English Meaning:A small leak in the fuel vapor system is detected
✅
Green: Safe to Drive
This is usually not dangerous but should be fixed
P0442 Symptoms
- •Check engine light fuel smell sometimes
Most Common Causes of P0442
1Loose gas cap cracked hoses faulty purge valve
P0442 Repair Playbook
Required Mechanic Tests
A qualified shop should perform these tests before replacing any parts to ensure they aren't guessing:
Smoke test EVAP system inspect gas cap and lines
Typical Fix Paths & Estimated Costs
Tighten or replace gas cap fix hoses $20–$300
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Parts for P0442 Repair
Common replacement parts for emissions codes. (Paid links)
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