P0442 on Your 2021 Kia Telluride
The P0442 code on your 2021 Kia Telluride indicates the engine control module has detected a small leak in the evaporative emission control system. P0442 flags a leak roughly 0.020 inches in diameter.
The 2021 Telluride is Kia's flagship three-row SUV, powered by a 3.8L V6 engine with an 8-speed automatic — the same powertrain as its Hyundai Palisade sibling. The larger SUV has more extensive EVAP vapor line routing. Kia's system uses the PCSV, CCV, and FTPS.
Most Likely Causes
- Gas Cap O-Ring Wear — After a few years of family SUV use with frequent fill-ups, the seal can wear. Check first ($10–$20).
- PCSV Issue — The 3.8L V6 generates significant heat that stresses the Purge Control Solenoid Valve.
- CCV Problem — The Canister Close Valve can be affected by moisture and debris.
- Vapor Line Looseness — The Telluride's larger size means longer vapor line runs with more connection points.
- FTPS Drift — Minor Fuel Tank Pressure Sensor calibration issue.
Warranty Coverage
- Check the gas cap — Free first step.
- Visit your Kia dealer — Your 2021 Telluride is within Kia's 5-year/60,000-mile basic warranty (through approximately 2026). EVAP components are covered for 8 years or 80,000 miles. All repairs at no cost.
Costs if Out of Warranty
Gas cap $10–$20, PCSV $140–$280, CCV $110–$250.