What does code P0442 mean on a Honda and is it safe to drive?
P0442: Evaporative Emission System Leak Detected (Small Leak). Here's what it means on your Honda, what usually causes it, what repairs typically cost, and how safe it is to keep driving.
PowertrainLow urgency
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 for your Honda
- 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 Honda, repairs for P0442 often fall between $15 and $300, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.
Known issues on Honda
Honda P0442 commonly results from a damaged gas cap or a leaking fuel filler neck. On higher-mileage Accord and CR-V models, the EVAP purge solenoid can develop small leaks that trigger this code.
Most commonly affected models
Accord 2003–2012Civic 2006–2015CR-V 2002–2011