Tracking Down P0455 on Your 2022 Ford Maverick
A P0455 on your 2022 Ford Maverick means the PCM detected a large EVAP leak. Whether you have the 2.5L hybrid or the 2.0L EcoBoost, this code is about the vapor containment system—not the engine. Your Maverick may still be within Ford's basic warranty. Check the gas cap first.
Clues Present
- Check engine light with P0455
- Possible faint fuel odor
- Gas cap not clicking when tightened
- Emissions monitor incomplete
Suspects Ranked
- Gas Cap Seal (Very High Likelihood): Loose or worn. Tighten or replace ($10–$25). The #1 P0455 cause.
- Canister Vent Solenoid (Medium Likelihood): Ford's vent solenoid failing to seal. $120–$220 if out of warranty.
- EVAP Purge Valve (Medium Likelihood): Stuck open. $100–$200.
- Vapor Line (Low Likelihood): Cracked or disconnected hose. $80–$200.
- Charcoal Canister (Low Likelihood): Saturated from overfilling. $200–$350.
What to Do
Tighten the gas cap and drive 2–3 days. If the light persists, check your warranty status and visit a Ford dealer. The federal emissions warranty covers this through 2030 regardless.
Warranty Coverage
Ford's basic warranty (3 years/36,000 miles) runs through 2025. The federal emissions warranty (8 years/80,000 miles) covers EVAP through 2030. Check with your dealer for free repair eligibility.
Hybrid Note
If you have the 2.5L hybrid Maverick, P0455 is still an EVAP issue—it has nothing to do with the hybrid battery or electric motor system.
Safe to Drive?
Yes. P0455 doesn't affect the Maverick's engine, CVT/8-speed, or any driving systems.