P0442 on Your 2024 Hyundai Kona
A P0442 code on your 2024 Hyundai Kona 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 during the system's automated test.
The 2024 Kona is completely redesigned on a new platform with a 2.0L four-cylinder engine. As a first-year redesign, some P0442 codes may relate to software calibration. Hyundai's EVAP system uses the PCSV, CCV, and FTPS. Note: the Kona Electric has no EVAP system — this only applies to the gasoline model.
Possible Causes
- Gas Cap Issue — A loose or cross-threaded cap. Check before visiting the dealer.
- New-Platform Software Calibration — The redesigned Kona's EVAP monitoring may need calibration updates.
- PCSV Defect — A factory-defective Purge Control Solenoid Valve.
- CCV Issue — A manufacturing defect in the Canister Close Valve.
- FTPS Calibration — Sensor calibration refinement for the new platform.
Warranty-First Approach
- Check the gas cap — Free and may resolve the code.
- Visit your Hyundai dealer — The 5-year/60,000-mile basic warranty and 8-year/80,000-mile federal emissions warranty cover all P0442 work at no cost.
- Ask about TSBs — Important for first-year redesigns.