2005 Acura P0442: What It Means & Is It Safe to Drive?
P0442 on the 2005 Acura: 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 2005 Acura
- 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 2005 Acura, repairs for P0442 typically fall between $15 and $300, depending on the root cause and labor rates in your area.
Known issues on Acura
Acura P0442 follows Honda's pattern—start with the gas cap. If clear, the EVAP purge solenoid valve and its hose connections are the next items to inspect on J-series and K-series models.
Most commonly affected models
TL 2004–2008MDX 2003–2006TSX 2004–2008