P0442 Chevrolet Traverse
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 Chevrolet Traverse 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 Chevrolet Traverse.
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 Chevrolet Traverse.
Common Causes on Chevrolet Traverse
- Loose or damaged gas cap
- EVAP purge solenoid failure on 3.6L V6
- Cracked EVAP line running along frame rail
- Fuel tank pressure sensor malfunction
- Charcoal canister hose connection 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 Chevrolet Traverse
Traverse and Acadia EVAP purge solenoids are located on the intake manifold and are easy to access for replacement.