P0442

EVAP System — Small Leak Detected

P0442
EVAP System — Small Leak Detected
Not urgent
Ranked Possible Causes
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What You'll Notice

No drivability symptoms, CEL on, Sometimes a faint fuel smell

Cost Estimate
JobRange
New gas cap (DIY)$15–$35
EVAP hose repair$40–$150
Purge/vent valve replacement$80–$220
Smoke test to find leak (shop)$80–$150
Parts You Might Need
• Gas cap
• EVAP purge valve
• EVAP vent valve
• EVAP hose

These percentages are general patterns, not a diagnosis for your specific vehicle. Have a technician scan your car to confirm which component is actually failing.

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