P0456 on Your 2023 Telluride: Investigating the Leak
Your 2023 Telluride (refreshed 1st generation) has triggered P0456—a very small EVAP leak. The 3.8L V6 uses a standard EVAP system. With only a couple years on it, this is an early occurrence. Fully within Kia's 5yr/60k warranty through 2028.
Evidence
- Check engine light on
- P0456 stored
- No performance symptoms
- Gas cap may not be fully seated
Suspects
- Gas Cap Seal (High Likelihood): Loose or debris on seal. $0 warranty.
- Purge Control Solenoid Valve (High Likelihood): Manufacturing variance. $0 warranty.
- Canister Close Valve (Medium Likelihood): Vent control. $0 warranty.
- EVAP Line Connection (Low Likelihood): Loose fitting. $0 warranty.
- Software Calibration (Low Likelihood): Detection sensitivity. $0 warranty.
What to Do
- Reseat gas cap firmly
- Schedule dealer appointment—fully covered through 2028
- Free repair under warranty
Cost
- Under warranty: $0
- 5yr/60k through 2028
- Federal emissions through 2031
Can I Drive?
Yes. P0456 has zero impact on the V6, AWD, towing, or safety systems.
Warranty
Kia's 5yr/60k through 2028. 10yr/100k powertrain. Federal emissions 8yr/80k through 2031. Everything covered.