P0442Evaporative Emission (EVAP) System Leak Detected (Small Leak)
A small leak was detected in the evaporative emission control system.
Can I keep driving? Yes
You can keep driving normally. Schedule a check soon so emissions and performance are not affected.
Sistema Afectado
Sistema de Escape · Catalizador y sensores O₂
La falla se localiza en la línea de escape: catalizador, sondas lambda (O₂) o sistema EGR.
Espacio para vendedores de repuestos
Aún no hay un anunciante en este espacio.
Symptoms You Will Notice
What you may observe when this code appears
- Check Engine light on
- Possible faint fuel smell
- No driveability symptoms
Possible Causes
The components or conditions that trigger this code
- 1Loose or damaged fuel cap
- 2Cracked EVAP hoses
- 3Purge valve with a small leak
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Tighten or replace the fuel cap
- 2Inspect the EVAP system hoses
- 3Perform a smoke test to find the leak
Note: This information is for general reference. For precise diagnostics and safety repairs, always consult a certified mechanic.
Estimated Cost
Approximate range in USD (varies by region and shop)
Varies by diagnosis
* Diagnosis only: $50–$150
Quick Info
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