2018 Chrysler P0442: What It Means & Is It Safe to Drive?
P0442 on the 2018 Chrysler: 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 2018 Chrysler
- 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 2018 Chrysler, repairs for P0442 typically fall between $15 and $300, depending on the root cause and labor rates in your area.
Known issues on Chrysler
Chrysler P0442 on Pentastar and HEMI engines mirrors Dodge's EVAP diagnosis. Check the gas cap first; the EVAP vent solenoid near the fuel tank and the large EVAP hose routing are secondary failure points.
Most commonly affected models
300 2005–2014Town & Country 2008–2016