P0442 Ford Explorer
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 Ford Explorer 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 Ford Explorer.
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 Ford Explorer.
Common Causes on Ford Explorer
- Loose or worn gas cap
- EVAP canister vent solenoid not closing fully
- Small crack in EVAP vapor line near fuel tank
- Fuel filler pipe seal deterioration
- EVAP purge valve slow 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 Ford Explorer
Explorer and Edge EVAP vent solenoids are located near the charcoal canister under the rear of the vehicle. Access requires lifting the vehicle.