P0456 on Your 2024 Ford F-150
A P0456 on your 2024 F-150 (14th generation, refreshed) means a very small EVAP leak. Whether equipped with the 3.5L EcoBoost, 5.0L V8, 2.7L EcoBoost, or PowerBoost hybrid, the EVAP system using Ford's canister vent solenoid is fully under warranty. Gas cap first.
Symptoms
- Check engine light with P0456
- No drivability issues
- Gas cap may feel slightly off
- EVAP monitor incomplete
Top Causes
- Gas Cap Seal (Very High Likelihood): Tiny imperfection. Warranty-covered.
- Canister Vent Solenoid (Medium Likelihood): Ford EVAP valve. Warranty-covered.
- Purge Valve (Low-Medium Likelihood): Factory issue. Warranty-covered.
- EVAP Line Connection (Low Likelihood): Assembly gap. Warranty-covered.
- ECU Software (Low Likelihood): Calibration. Warranty-covered.
What to Do
Tighten the gas cap and drive 2–3 days. If P0456 persists, your Ford dealer will diagnose free using IDS or FORScan-level diagnostics.
Warranty
Ford's 3yr/36k bumper-to-bumper covers everything through 2027. Federal emissions (8yr/80k) extends through 2032.
Safe to Drive?
Yes. P0456 has zero impact on any F-150 powertrain, towing, or features.