2009 Toyota P0442: What It Means & Is It Safe to Drive?
P0442 on the 2009 Toyota: 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 2009 Toyota
- 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 2009 Toyota, repairs for P0442 typically fall between $15 and $300, depending on the root cause and labor rates in your area.
Known issues on Toyota
P0442 on Toyota is most often caused by a loose or worn gas cap. If the cap is fine, the charcoal canister vent valve (VSV) and the EVAP purge valve are the next items to test on these models.
Most commonly affected models
Camry 2000–2011Corolla 2003–2013RAV4 2001–2012