Diagnosing P0455 on Your 2024 Nissan Pathfinder
A P0455 on your 2024 Pathfinder means the ECM detected a large EVAP leak. Your R53-generation Pathfinder with the 3.5L V6 and 9-speed automatic is fully under Nissan's warranty. Check the gas cap first—it's the most common cause on any vehicle.
Symptoms
- Check engine light with P0455
- Possible faint fuel odor
- Gas cap not clicking securely
- EVAP readiness monitor not completing
Most Likely Causes
- Gas Cap (Very High Likelihood): Loose or not seated. Tighten until it clicks firmly.
- Software Calibration (Medium Likelihood): ECM may need a Nissan TSB update on newer models.
- Vent Control Valve (Medium Likelihood): Nissan's vent valve not sealing. Warranty replacement.
- Purge Volume Control Valve (Low Likelihood): Nissan's PVCV stuck open. Warranty-covered.
- EVAP Line Connection (Low Likelihood): Assembly issue. Warranty-covered.
What to Do
Tighten the gas cap and drive 2–3 days. If P0455 persists, take your Pathfinder to a Nissan dealer. CONSULT diagnostics and smoke testing are free under warranty.
Warranty Coverage
Your 2024 Pathfinder is covered by Nissan's 3-year/36,000-mile warranty through 2027 and the federal emissions warranty (8yr/80k) through 2032. All EVAP repairs are free.
Safe to Drive?
Yes. P0455 doesn't affect the Pathfinder's 3.5L V6, 9-speed automatic, 4WD, or towing capacity.