Diagnosing P0455 on Your 2023 Nissan Murano
A P0455 on your 2023 Murano means the ECM detected a large EVAP leak. Your Murano with the 3.5L V6 and CVT is under Nissan's warranty for this repair. Check the gas cap first.
Symptoms
- Check engine light with P0455
- Possible faint fuel smell
- Gas cap not clicking
- EVAP monitor incomplete
Causes by Likelihood
- Gas Cap Seal (Very High Likelihood): Loose or defective. Tighten until clicks. Warranty-covered if defective.
- Vent Control Valve (Medium Likelihood): Nissan's vent valve. Warranty replacement.
- Purge Volume Control Valve (Medium Likelihood): PVCV stuck open. Warranty-covered.
- Vapor Line (Low Likelihood): Factory connection issue. Warranty-covered.
- Charcoal Canister (Low Likelihood): Rare defect. Warranty-covered.
What to Do
Tighten the gas cap and drive 2–3 days. If P0455 persists, visit a Nissan dealer for free diagnostics under warranty.
Warranty Coverage
Your 2023 Murano is covered by Nissan's 3-year/36,000-mile warranty through 2026 and the federal emissions warranty (8yr/80k) through 2031.
Safe to Drive?
Yes. P0455 doesn't affect the Murano's V6, CVT, or AWD.