Cracking the P0446 Code on Your 2024 Kia Telluride
A P0446 code on your 2024 Kia Telluride points to an electrical malfunction in the EVAP vent control circuit. Kia's flagship three-row SUV (ON platform) with the proven 3.8L Lambda II V6 uses a Canister Close Valve (CCV) for EVAP vent management. The PCM has detected a circuit-level fault in this valve — not a physical vapor leak.
On a brand-new Telluride under Kia's full warranty, this code is a straightforward situation with a zero-cost resolution. Let the dealer handle the investigation.
Symptoms Noted
- Check engine light on with P0446 stored
- Fuel pump nozzle clicking off early during fill-ups
- EVAP readiness monitor not completing
- May appear with companion codes like P0441
Suspect Lineup
- Canister Close Valve (CCV) Defect (High Likelihood): Even on new SUVs, the CCV solenoid can have a manufacturing defect or fail early. It's the primary P0446 suspect on all Kia models. Warranty-covered.
- Factory Wiring or Connector Issue (High Likelihood): Assembly-line wiring or connector seating issues at the CCV trigger circuit codes on new vehicles. No-cost warranty fix.
- PCM Software Calibration (Medium Likelihood): Updated software may refine EVAP monitoring parameters on the ON platform. Free dealer reflash.
- Fuel Tank Pressure Sensor (FTPS) Fault (Medium Likelihood): An FTPS providing incorrect data affects vent circuit evaluation. Warranty-covered.
- Ground Circuit Fault (Low Likelihood): A poor ground connection in the CCV circuit. Warranty-covered.
What to Do
Visit your Kia dealer. Their GDS diagnostic system provides manufacturer-level EVAP testing, bidirectional CCV control, and access to TSBs for the Telluride platform. Under full warranty, the dealer is the only sensible choice.
Full Warranty Protection
Your 2024 Telluride is fully covered under Kia's 5-year/60,000-mile basic warranty and 10-year/100,000-mile powertrain warranty. The federal emissions warranty adds 8 years/80,000 miles. This repair costs you nothing.
Can I Drive With P0446?
Yes. P0446 is an emissions circuit code. Your Telluride's V6 power, 8-speed transmission, AWD, and 5,000-pound towing capacity are completely unaffected. Drive and tow normally.