Cracking the P0440 Case on Your 2023 Kia Telluride
A P0440 code on your 2023 Kia Telluride points to an EVAP system malfunction. The refreshed 2023 Telluride continues on the BY platform with the 3.8L Lambda II V6 (291 hp) and 8-speed automatic. As a newer vehicle under warranty, this code is likely a minor issue. Let's follow the trail.
Symptoms
- Check engine light on
- Faint fuel odor
- Slight fuel economy decrease
- Fueling difficulties at the pump
- Emissions test failure
Your Telluride drives normally. The V6, 8-speed, and AWD are all unaffected.
Most Likely Causes
- Gas Cap — Not fully tightened or worn. Estimated repair: $0–$25.
- Purge Control Solenoid Valve (PCSV) — Manufacturing defect or early failure on the 3.8L V6. Estimated repair: $85–$215 (warranty-covered).
- Canister Close Valve (CCV) — Electrical or mechanical failure near the fuel tank. Estimated repair: $95–$235 (warranty-covered).
- EVAP Connection Issue — Loose fitting from the factory. Estimated repair: $0–$90 (warranty).
- Fuel Tank Pressure Sensor — Inaccurate readings. Estimated repair: $100–$255 (warranty).
Diagnostic Steps
- Check gas cap — remove, inspect, reinstall firmly
- Clear code, drive 50+ miles, monitor
- Schedule Kia dealer appointment if code returns
- Dealer will run smoke test and EVAP diagnostics
- Check for TSBs on the 2023 Telluride
Repair Costs
- Gas cap: $0–$25
- PCSV: $85–$215 (warranty)
- CCV: $95–$235 (warranty)
- EVAP connection: $0–$90 (warranty)
- FTP sensor: $100–$255 (warranty)
Warranty: Your 2023 Telluride is covered by Kia's 5-year/60,000-mile basic warranty. All EVAP repairs are free at the dealer.
Can I Drive With P0440?
Yes. No impact on performance or safety.
DIY or Dealer?
Dealer — your 2023 Telluride is under warranty. Let Kia handle the repair at no cost.