P0442 Kia Telluride
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 Kia Telluride 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 Kia Telluride.
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 Kia Telluride.
Common Causes on Kia Telluride
- Gas cap not sealing due to worn gasket
- EVAP purge valve failure
- EVAP vapor line crack along frame rail
- Fuel tank seal deterioration
- Charcoal canister vent valve not closing fully
Symptoms
- Check engine light illuminated
- Faint fuel smell near vehicle
- Slightly reduced fuel economy
- Failed emissions test
- Occasional rough idle after refueling
Notes for Kia Telluride
Palisade and Telluride have longer EVAP line runs due to their size. Inspect full line routing during smoke testing.