P0456 on Your 2024 Grand Wagoneer: Quick Case
Your 2024 Grand Wagoneer has flagged P0456—a very small EVAP leak. The 6.4L HEMI V8 (or Hurricane twin-turbo I6 on some trims) uses a Stellantis EVAP system with NVLD. Fully covered under warranty through 2027.
Clues
- Check engine light on
- P0456 stored
- No drivability issues
- Gas cap may not be fully engaged
Suspects
- Gas Cap Not Seated (High Likelihood): Common on new vehicles. $0.
- NVLD Sensor (Medium Likelihood): Natural Vacuum Leak Detection. $0 warranty.
- Purge Solenoid Valve (Low Likelihood): Manufacturing variance. $0 warranty.
- Software Calibration (Low Likelihood): Detection threshold. $0 warranty update.
What to Do
- Reseat gas cap firmly
- If light persists, dealer appointment—covered through 2027
- Free warranty repair
Cost
- Under warranty: $0
- 3yr/36k through 2027
- Federal emissions through 2032
Can I Drive?
Yes. P0456 has zero impact on the HEMI/Hurricane, 4x4, air suspension, towing, or any feature.
Warranty
Stellantis 3yr/36k through 2027. 5yr/60k powertrain. Federal emissions 8yr/80k through 2032. No cost to you.