Tracking P0456 on Your 2022 Ram 1500
Your 2022 Ram 1500 (DT) has triggered P0456—a very small EVAP leak. The 5.7L HEMI (or 3.6L V6) uses a Stellantis EVAP system with NVLD. Stellantis 3yr/36k warranty runs through 2025—check mileage.
Evidence
- Check engine light on
- P0456 stored
- No performance issues
- Gas cap may need reseating
Suspects
- Gas Cap Seal (High Likelihood): Work site debris or wear. $0 warranty or $10–$15.
- NVLD Sensor (High Likelihood): Documented failure. $0 warranty or $130–$300.
- Purge Solenoid Valve (Medium Likelihood): HEMI heat cycling. $0 warranty or $110–$260.
- EVAP Hose (Medium Likelihood): Under-bed routing. $130–$270.
- Charcoal Canister (Low Likelihood): Large fuel tank overfilling. $220–$420.
Diagnostic Steps
- Reseat gas cap—clean debris
- Check warranty—3yr/36k through 2025
- Dealer appointment—wiTech NVLD diagnostics
- Smoke test if out of warranty ($80–$150)
Costs
- Under warranty: $0
- Gas cap: $10–$15
- NVLD sensor: $130–$300
- Purge valve: $110–$260
Can I Drive?
Yes. P0456 has zero impact on the HEMI, 4x4, towing, or payload.
Warranty
Stellantis 3yr/36k through 2025—check mileage. Federal emissions 8yr/80k through 2030.