P0456 on Your 2024 Grand Cherokee: Quick Investigation
Your 2024 Grand Cherokee (WL generation) has flagged P0456—a very small EVAP leak. The 3.6L Pentastar V6 (or 5.7L HEMI, or 4xe plug-in hybrid) uses a Stellantis EVAP system with NVLD. Nearly new and fully covered under Stellantis's 3yr/36k warranty through 2027.
Clues
- Check engine light on
- P0456 stored
- No drivability issues
- Gas cap may not be fully seated
Suspects
- Gas Cap Not Seated (High Likelihood): Most common trigger on new vehicles. $0.
- NVLD Sensor (Medium Likelihood): Natural Vacuum Leak Detection module. $0 warranty.
- Purge Solenoid Valve (Medium Likelihood): Manufacturing variance. $0 warranty.
- Software Calibration (Low Likelihood): Detection sensitivity. $0 warranty update.
What to Do
- Reseat gas cap firmly
- If light persists after 2–3 drive cycles, dealer appointment
- Free warranty repair via wiTech diagnostics
Cost
- Under warranty: $0
- 3yr/36k through 2027
- Federal emissions through 2032
Can I Drive?
Yes. P0456 has zero impact on the engine, 4x4, towing, or Quadra-Trac.
Warranty
Stellantis 3yr/36k through 2027. 5yr/60k powertrain. Federal emissions 8yr/80k through 2032. Fully covered.