P0455 on Your 2024 Mazda3
A P0455 on your 2024 Mazda3 means the PCM found a large EVAP leak. Your SKYACTIV-G 2.5L (sedan or hatch) is fully under warranty. Gas cap first.
Symptoms
- Check engine light with P0455
- Possible fuel smell
- Gas cap not seating
- EVAP monitor incomplete
Top Causes
- Gas Cap Seal (Very High Likelihood): Loose or factory defect. Warranty-covered.
- Purge Solenoid Valve (Medium Likelihood): Mazda purge valve. Warranty-covered.
- Canister Vent Valve (Medium Likelihood): Factory defect. Warranty-covered.
- Vapor Hose (Low Likelihood): Assembly issue. Warranty-covered.
- PCM Software (Low Likelihood): Calibration update. Warranty-covered.
Warranty
Your 2024 Mazda3 is covered by Mazda's 3-year/36,000-mile warranty through 2027. Federal emissions (8yr/80k) extends through 2032.
Safe to Drive?
Yes. P0455 doesn't affect the SKYACTIV engine, i-ACTIV AWD, or any features.