Following the P0440 Trail on Your 2024 Hyundai Tucson
A P0440 code on your 2024 Hyundai Tucson directs our investigation to the EVAP system. The fourth-generation Tucson, built on Hyundai's N3 platform with the 2.5L Smartstream engine (187 hp), features a modern EVAP system. On a new SUV under warranty, the resolution should be quick and free.
Symptoms
- Check engine light on
- Faint fuel odor
- Slight fuel economy decrease
- Fueling issues at the pump
- Emissions test failure
Your Tucson drives normally. The 2.5L engine, 8-speed automatic, and available HTRAC AWD are unaffected.
Probable Causes
- Gas Cap — Loose or improperly seated. Estimated repair: $0–$25 (warranty).
- Purge Control Solenoid Valve — The PCSV on the 2.5L Smartstream. Estimated repair: $0–$195 (warranty).
- Canister Close Valve — Controls EVAP airflow. Estimated repair: $0–$215 (warranty).
- Factory Assembly Issue — Loose vapor line connection. Estimated repair: $0 (warranty).
- Software Calibration — PCM update may be needed. Estimated repair: $0 (warranty).
Diagnostic Steps
- Check gas cap
- Visit dealer — check for Hyundai TSBs for the 2024 Tucson
- Dealer scans codes, tests components, smoke tests if needed
Cost
$0 under warranty. Hyundai's 5-year/60,000-mile basic warranty covers all EVAP repairs.
Can I Drive With P0440?
Yes. P0440 is completely safe. Schedule a dealer visit at your convenience.
Dealer Recommended
Free warranty repair — no reason to DIY on a 2024 model.