P0456 on Your 2023 Murano: The Final Year
Your 2023 Murano (3rd generation, final model year before discontinuation) has triggered P0456—a very small EVAP leak. The 3.5L VQ35DE V6 with CVT uses Nissan's proven EVAP system. At 2–3 years old, warranty should cover this.
Symptoms
- Check engine light on
- P0456 stored
- No performance issues
- AWD and all features normal
Top Causes
- Gas Cap Seal (High Likelihood): Loose or debris. $0–$15 (warranty may cover).
- EVAP Leak Detection Pump (High Likelihood): Nissan-specific. $0–$300 (warranty may cover).
- Purge Volume Control Valve (Medium Likelihood): Component variance. $0–$230 (warranty may cover).
- Canister Close Valve (Medium Likelihood): Nissan vent valve. $0–$240 (warranty may cover).
- Software Update (Low Likelihood): ECM calibration. $0 warranty.
What to Do
- Reseat gas cap
- Check warranty—Nissan 3yr/36k runs through 2026
- Dealer appointment for free diagnosis and repair
Costs
- Under warranty: $0
- Gas cap: $10–$15
- Leak detection pump: $180–$300
Can I Drive?
Yes. P0456 has zero impact on the Murano's V6, CVT, AWD, or any feature.
Warranty
Nissan's 3yr/36k runs through 2026. Federal emissions (8yr/80k) covers EVAP through 2031. Though the Murano is discontinued, warranty and parts continue normally.