P0442
EVAP System Leak Detected (small leak)
P0442 is an OBD-II diagnostic trouble code meaning: EVAP System Leak Detected (small leak). Common causes: fuel tank cap leaking, cracked or damaged evap hoses. Estimated repair cost: $22–89.
Symptoms
- Check Engine light comes on
- Increased fuel consumption
- The smell of gasoline in or around the car
Causes
- Fuel tank cap leaking
- Cracked or damaged EVAP hoses
- Purge valve malfunction
- Damage to the adsorber
- Problems with the wiring harness or EVAP sensors
How to Fix
- Check and tighten the fuel cap
- Visually inspect the EVAP system hoses for damage.
- Check the tightness of the system using a smoke generator
- Check the functionality of the purge valve and adsorber
- Replace faulty components
Related codes
Error P0442 by Vehicle Brand
FAQ
What does the P0442 code mean?
P0442 is an OBD-II diagnostic trouble code that indicates: EVAP System Leak Detected (small leak)
What causes a P0442 error code?
The most common causes of P0442 include: Fuel tank cap leaking; Cracked or damaged EVAP hoses; Purge valve malfunction; Damage to the adsorber.
How do I fix a P0442 diagnostic trouble code?
To fix P0442: Check and tighten the fuel cap. Visually inspect the EVAP system hoses for damage.. Check the tightness of the system using a smoke generator. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0442?
Limited driving only, diagnose soon
How much does it cost to fix P0442?
The estimated repair cost for P0442 is $22–89. Actual cost depends on your vehicle, location, and labor rates.
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