P0442 Nissan Pathfinder
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 Nissan Pathfinder 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 Nissan Pathfinder.
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 Nissan Pathfinder.
Common Causes on Nissan Pathfinder
- Gas cap seal deterioration
- EVAP vent control valve stuck partially open
- EVAP vapor line cracked from heat or road debris
- Fuel filler neck seal corrosion
- Charcoal canister vent hose loose or cracked
Symptoms
- Check engine light illuminated
- Faint fuel smell near vehicle
- Slightly reduced fuel economy
- Failed emissions test
- Occasional rough idle after refueling
Notes for Nissan Pathfinder
Rogue, Pathfinder, and Murano EVAP vent control valves are located near the charcoal canister at the rear of the vehicle.