Investigating P0440 on the Redesigned 2022 Nissan Pathfinder
Your 2022 Nissan Pathfinder — the first year of the fifth generation — has set a P0440 code. The redesigned Pathfinder uses a 3.5L V6 paired with a 9-speed automatic (replacing the CVT), and features updated EVAP components. Let's examine the evidence.
Symptoms
- Check engine light on
- Possible fuel odor
- Slight fuel economy decrease
- Fueling issues
- Emissions test failure
Your Pathfinder performs normally. The V6, 9-speed, and AWD system are unaffected.
Causes
- Gas Cap — First check. Estimated repair: $5–$25.
- Purge Volume Control Valve — Nissan's PVCV continues to be a common failure on the VQ V6. Estimated repair: $80–$210.
- Canister Vent Control Valve — New generation, but same component design. Estimated repair: $90–$230.
- Leak Detection Pump — Nissan's self-test pump. Estimated repair: $150–$360.
- First-Year Issue — Assembly or calibration concerns on a new platform. Estimated repair: $0 (warranty).
Diagnosis
- Check gas cap
- Scan for codes and check for Nissan TSBs
- Test solenoids and pump
- Smoke test if needed
Costs
- Gas cap: $5–$25
- PVCV: $80–$210
- Vent control valve: $90–$230
- Leak detection pump: $150–$360
- Diagnostic: $80–$150
Warranty: Check your mileage. If under 36,000 miles, Nissan's warranty covers EVAP repairs.
Driving Impact
None. Completely safe.
Repair Approach
Check warranty first. If covered, go to the dealer. If not, start with the gas cap and work through the diagnostic steps.