P0455 on Your Dodge Hornet
A P0455 on your Dodge Hornet means a large EVAP leak. Built on the STLA Small platform shared with the Alfa Romeo Tonale, the Hornet uses a 2.0L turbo engine with a modern EVAP system. Check warranty coverage based on your purchase date.
Clues
- Check engine light illuminated
- P0455 stored in PCM
- Possible fuel odor
- Gas cap not seating properly
Causes Ranked
- Gas Cap Seal (Very High Likelihood): Loose or defective. $0–$25.
- Purge Valve (Medium Likelihood): Stellantis EVAP purge valve. $120–$280 installed.
- EVAP Canister (Low-Medium Likelihood): Charcoal canister issue. $200–$400 installed.
- Vapor Line (Low Likelihood): Connection or seal failure. $100–$250 installed.
- Fuel Tank Pressure Sensor (Low Likelihood): Faulty sensor. $120–$280 installed.
Diagnosis
Gas cap first. If P0455 persists, a Dodge dealer with wiTECH diagnostics can pinpoint the issue. The Hornet's STLA platform shares some components with Alfa Romeo, so specialized diagnostics are recommended.
Warranty
Check your Hornet's warranty status. Chrysler's 3yr/36k warranty may still apply depending on purchase date. Federal emissions (8yr/80k) provides extended EVAP coverage.
Safe to Drive?
Yes. P0455 doesn't affect the 2.0L turbo, AWD, or any Hornet features.