2015 Hyundai P0442: What It Means & Is It Safe to Drive?
P0442 on the 2015 Hyundai: Evaporative Emission System Leak Detected (Small Leak). Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
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What this code means
The EVAP system has detected a small leak. Often caused by a loose or faulty gas cap or a small hose leak.
Common causes on the 2015 Hyundai
- Loose, damaged, or wrong gas cap
- Cracked or disconnected EVAP hose
- Faulty purge or vent valve
- Leaking charcoal canister
Symptoms
- Check Engine Light
- Often no driveability issues
Typical fixes
- Tighten or replace gas cap
- Smoke test EVAP system
- Replace damaged hoses or valves
Repair cost range
For a 2015 Hyundai, repairs for P0442 typically fall between $15 and $300, depending on the root cause and labor rates in your area.
Known issues on Hyundai
P0442 on Hyundai most often means a loose or damaged gas cap. If the cap is good, smoke test the EVAP system—the purge valve and canister vent hoses are the usual secondary leak points.
Most commonly affected models
Sonata 2006–2015Elantra 2007–2016Tucson 2005–2015