The P0446 Investigation on Your 2023 Kia Telluride
A P0446 code on your 2023 Kia Telluride signals a circuit malfunction in the EVAP vent control system. The refreshed Telluride (ON platform, updated for 2023) with its 3.8L Lambda II V6 uses a Canister Close Valve (CCV) to control evaporative emissions venting. The PCM has detected an electrical fault in this circuit.
The 2023 refresh brought updated styling and features to Kia's three-row flagship. The EVAP system fundamentals carry over from the proven ON platform. With full warranty coverage, this is a no-cost repair.
What You May See
- Check engine light on with P0446
- Fuel nozzle clicking off during refueling
- EVAP readiness monitor incomplete
- May appear with companion codes
Likely Causes
- Canister Close Valve (CCV) Failure (High Likelihood): The CCV can fail electrically even on newer vehicles. It's the primary suspect for P0446 across all Kia models. Warranty-covered.
- CCV Connector or Wiring Issue (High Likelihood): A loose connector or early wiring degradation at the CCV. On the refreshed Telluride, assembly-related issues are possible. Warranty-covered.
- PCM Software Calibration (Medium Likelihood): The refreshed 2023 model may need updated EVAP monitoring software. Free dealer reflash.
- Fuel Tank Pressure Sensor (FTPS) Fault (Medium Likelihood): Bad FTPS data affects vent circuit monitoring. Warranty-covered.
- Ground Circuit Issue (Low Likelihood): A poor ground affecting the CCV circuit. Warranty-covered.
Recommended Approach
Head to a Kia dealer. Their GDS system provides full diagnostic capabilities for the refreshed ON platform, including bidirectional CCV testing and TSB access. Under full warranty, this is the clear path.
Warranty Coverage
Your 2023 Telluride is 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 for EVAP. This repair is free.
Can I Drive With P0446?
Yes. P0446 is an emissions code only. Your Telluride's 291-hp V6, 8-speed transmission, AWD, and full towing capacity are unaffected.