Decoding P0446 on Your 2024 Hyundai Kona
A P0446 code on your 2024 Hyundai Kona indicates a circuit malfunction in the EVAP vent control system. The all-new second-generation Kona (SX2 platform) represents a complete redesign with a larger footprint and bolder design. It uses a Canister Close Valve (CCV) to manage evaporative emissions, and the PCM has detected an electrical fault in this valve's circuit.
As a first-year vehicle on a brand-new platform, a P0446 code often points to an isolated component issue or software calibration need. Hyundai's comprehensive warranty ensures a hassle-free resolution.
Symptoms Noted
- Check engine light on with P0446
- Fuel nozzle clicking off early during refueling
- EVAP readiness monitor not completing
- May appear with related codes like P0441 or P0455
Top Suspects
- Canister Close Valve (CCV) Defect (High Likelihood): Even on new vehicles, the CCV solenoid can arrive with a manufacturing defect or fail early. It's the primary P0446 suspect on all Hyundai models. Warranty-covered.
- Factory Wiring or Connector Issue (High Likelihood): First-year production on the SX2 platform means assembly-line variations are possible. A poorly seated connector or pinched wire at the CCV is a common finding. No-cost warranty fix.
- PCM Software Calibration (Medium Likelihood): New-platform vehicles frequently receive software updates to optimize EVAP monitoring thresholds. A free dealer reflash.
- Fuel Tank Pressure Sensor (FTPS) Fault (Medium Likelihood): An FTPS providing inaccurate data affects vent circuit evaluation. Warranty-covered.
- Ground Circuit Fault (Low Likelihood): A poor ground connection in the CCV circuit can cause intermittent P0446. Warranty-covered.
What to Do
Bring your 2024 Kona to an authorized Hyundai dealer. Their GDS system has the latest SX2 platform diagnostic procedures, including bidirectional CCV testing and TSB lookups. A new-platform vehicle under full warranty belongs at the dealer.
Full Warranty Coverage
Your 2024 Kona benefits from Hyundai's 5-year/60,000-mile basic warranty, 10-year/100,000-mile powertrain warranty, and the federal emissions warranty (8 years/80,000 miles). This repair is free.
Can I Drive With P0446?
Yes. P0446 is an emissions circuit code. Your Kona's engine, transmission, and optional AWD are completely unaffected. Drive normally to the dealer.