What P0442 Means for Your 2022 Hyundai Kona
The P0442 code on your 2022 Hyundai Kona indicates the engine control module has detected a small leak in the evaporative emission control system. This system captures fuel vapors and recycles them through the engine. P0442 flags a leak roughly 0.020 inches in diameter.
The 2022 Kona is the first-generation subcompact crossover, available with a 2.0L four-cylinder or 1.6L turbocharged engine (N Line). Hyundai's EVAP system uses the PCSV, CCV, and FTPS. The compact platform means shorter vapor line runs and simpler EVAP layout.
Most Likely Causes
- Gas Cap Seal Issue — A loose or worn gas cap is the most common cause. After a couple years, the O-ring can develop minor wear.
- PCSV Problem — Engine heat, especially on the 1.6T model, can stress the Purge Control Solenoid Valve.
- CCV Concern — The Canister Close Valve can be affected by moisture and debris.
- Vapor Line Looseness — Quick-connect fittings can develop slight looseness.
- FTPS Drift — Minor Fuel Tank Pressure Sensor calibration issue.
Warranty Coverage
- Check the gas cap — Free first step.
- Visit your Hyundai dealer — Your 2022 Kona is within Hyundai's 5-year/60,000-mile basic warranty. 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 $120–$250, CCV $90–$220, FTPS $80–$190.