Decoding P0455 on Your 2024 Dodge Hornet
A P0455 on your 2024 Hornet signals a large EVAP leak. Whether you have the GT (2.0L turbo) or R/T (1.3L turbo PHEV), the EVAP system is fully under warranty. Gas cap first.
Symptoms
- Check engine light with P0455
- Possible fuel smell
- Gas cap not clicking
- EVAP monitor incomplete
Causes Ranked
- Gas Cap Seal (Very High Likelihood): Loose or factory defect. Warranty-covered.
- Purge Valve (Medium Likelihood): STLA platform purge valve. Warranty-covered.
- EVAP Canister (Low-Medium Likelihood): Manufacturing defect. Warranty-covered.
- Vapor Line (Low Likelihood): Assembly issue. Warranty-covered.
- Software Calibration (Low Likelihood): PCM update. Warranty-covered.
What to Do
Tighten the gas cap and drive 2–3 days. If P0455 persists, visit your Dodge dealer for free warranty service. The Hornet R/T PHEV has additional complexity, so dealer diagnosis is especially recommended.
Warranty
Your 2024 Hornet is covered by Chrysler's 3-year/36,000-mile warranty through 2027. Federal emissions (8yr/80k) extends through 2032. The R/T PHEV has additional hybrid component warranty.
Safe to Drive?
Yes. P0455 doesn't affect turbo performance, AWD, PowerShot boost, or any features.