Tracking P0456 on Your 2022 Elantra
Your 2022 Elantra (7th generation, CN7) has flagged P0456—a very small EVAP leak. The compact sedan's 2.0L MPI (or 1.6L turbo N Line) uses a standard EVAP system with threaded gas cap. Still well within Hyundai's generous warranty coverage.
Clues
- Check engine light on
- P0456 stored
- No drivability issues
- Gas cap may feel slightly loose
Causes
- Gas Cap Seal (High Likelihood): Loose or worn. $0 warranty.
- Purge Control Solenoid Valve (High Likelihood): Standard EVAP failure. $0 warranty.
- Canister Close Valve (Medium Likelihood): Vent control. $0 warranty.
- EVAP Hose (Medium Likelihood): Connection issue. $0 warranty.
- Fuel Tank Pressure Sensor (Low Likelihood): Sensitivity. $0 warranty.
Next Steps
- Reseat gas cap
- Schedule Hyundai dealer warranty appointment
- Free diagnosis and repair under 5yr/60k warranty
Cost
- Under warranty: $0 (5yr/60k through 2027)
- Federal emissions: through 2030
Can I Drive?
Yes. P0456 has zero performance or safety impact.
Warranty
Hyundai's 5yr/60k bumper-to-bumper runs through 2027. 10yr/100k powertrain. Federal emissions 8yr/80k through 2030. You're well covered.