EVAP System Small Leak
A small leak has been detected in the evaporative emission system.
Informational only. Consult a qualified mechanic.
- Loose gas cap
- Small hose crack
- EVAP canister crack
- Filler neck issue
Tighten gas cap and clear code. If it returns, smoke test the EVAP system.
What does P0442 mean?
The P0442 OBD-II diagnostic trouble code (DTC) indicates: evap system small leak. This is a low-severity powertrain code that your vehicle's onboard diagnostics system triggers when a small leak has been detected in the evaporative emission system. If your check engine light is on with this code, the vehicle is generally safe to drive, but you should have it inspected soon.
Use Your Service Book to log this diagnostic trouble code to your vehicle's service history, track repairs, and get maintenance reminders — all for free.
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