P0440 on Your 2024 Nissan Pathfinder: Examining the Evidence
A P0440 code on your 2024 Nissan Pathfinder directs our investigation to the EVAP system. The Pathfinder's 3.5L V6 and 9-speed automatic are proven, and the EVAP system has been refined since the 2022 redesign. On a new vehicle under warranty, the resolution should be simple and free.
Symptoms
- Check engine light on
- Possible faint fuel smell
- Slight fuel economy decrease
- Fueling issues at the pump
- Emissions test failure
Your Pathfinder drives and tows normally. All systems function without issue.
Probable Causes
- Gas Cap — Loose or improperly seated. Estimated repair: $0–$25 (warranty).
- Purge Volume Control Valve — Nissan's PVCV on the VQ V6. Estimated repair: $0–$210 (warranty).
- Canister Vent Control Valve — Known Nissan failure. Estimated repair: $0–$230 (warranty).
- Leak Detection Pump — Self-test component. Estimated repair: $0–$360 (warranty).
- Software Calibration — May need a PCM update. Estimated repair: $0 (warranty).
Diagnosis
- Check gas cap
- Visit dealer for warranty diagnosis
- Dealer will scan, test components, and check for TSBs
Cost
$0 under warranty. Nissan's 3-year/36,000-mile warranty covers all EVAP repairs.
Concern Level
Minimal. P0440 is a low-severity emissions code. Safe to drive.
Go to the Dealer
Free warranty repair is the clear choice for a 2024 model.