P0442 Honda Pilot
EVAP System Leak Detected (Small Leak) · Powertrain Code · Low · Repair: Easy
What is P0442?
A small leak has been detected in the EVAP system. Common causes include a loose or cracked gas cap, cracked EVAP hose, or faulty purge/vent valve.
When the Honda Pilot triggers code P0442 (evap system leak detected (small leak)), it typically points to an issue in the powertrain system. Below you'll find the most common causes, symptoms, and repair options specific to the Honda Pilot.
This repair is rated easy, meaning basic tools, no lift needed.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Honda Pilot.
Common Causes on Honda Pilot
- Worn gas cap not maintaining seal
- Fuel tank pressure sensor malfunction
- EVAP canister vent shut valve failure
- EVAP vapor hose crack near fuel fill area
- Charcoal canister deterioration causing small leak
Symptoms
- Check engine light illuminated
- Faint fuel smell near vehicle
- Slightly reduced fuel economy
- Failed emissions test
- Occasional rough idle after refueling
Notes for Honda Pilot
CR-V and Pilot commonly trigger P0442 from fuel tank pressure sensor issues. This is a known Honda-specific failure pattern.