P0456 on Your 2024 Ram 1500: Quick Case
Your 2024 Ram 1500 (DT generation) has flagged P0456—a very small EVAP leak. The 5.7L HEMI V8 (or 3.6L Pentastar V6, or Hurricane twin-turbo I6) uses a Stellantis EVAP system with NVLD (Natural Vacuum Leak Detection). Fully covered under Stellantis's 3yr/36k warranty through 2027.
Clues
- Check engine light on
- P0456 stored
- No drivability or towing issues
- Gas cap may not be fully seated
Suspects
- Gas Cap Seal (High Likelihood): Loose or debris from work site/trail. $0 warranty.
- NVLD Sensor (High Likelihood): Natural Vacuum Leak Detection. $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—clean any debris
- If light persists, dealer appointment—covered through 2027
- 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 HEMI/V6, 4x4, towing, or payload.
Warranty
Stellantis 3yr/36k through 2027. 5yr/60k powertrain. Federal emissions 8yr/80k through 2032.