Diagnosing P0455 on Your 2024 Ford Ranger
A P0455 on your 2024 Ford Ranger means the PCM detected a large EVAP leak. Your all-new redesigned Ranger—now with an updated 2.3L EcoBoost or available 2.7L V6—is fully under warranty. On a truck this new, a software calibration or assembly issue is possible alongside the usual gas cap suspect.
Symptoms
- Check engine light with P0455
- Faint fuel odor
- Gas cap not clicking securely
- EVAP monitor not completing
Most Likely Causes
- Gas Cap (Very High Likelihood): Loose or not properly seated. Tighten until it clicks.
- Software Calibration (Medium Likelihood): The new-generation Ranger may need a PCM update via Ford TSB.
- Canister Vent Solenoid (Medium Likelihood): Factory defect on the new platform. Warranty replacement.
- EVAP Line Fitment (Low Likelihood): Assembly-related loose connection. Warranty-covered.
- Purge Valve (Low Likelihood): Stuck open from factory. Warranty-covered.
What to Do
Tighten the gas cap and drive 2–3 days. If P0455 returns, take your Ranger to a Ford dealer. They'll check for TSBs on the new platform, run IDS diagnostics, and smoke-test the system. All free under warranty.
Warranty Coverage
Your 2024 Ranger is covered by Ford's 3-year/36,000-mile warranty through 2027 and the federal emissions warranty (8 years/80,000 miles) through 2032. Let the dealer handle this.
Safe to Drive?
Yes. P0455 has no impact on the Ranger's engine, transmission, 4x4, or towing performance.