P0455 on Your 2024 Ram 1500
A P0455 on your 2024 Ram 1500 means the PCM detected a large EVAP leak. Whether you have the 3.6L Pentastar, 5.7L HEMI, or Hurricane twin-turbo inline-6, your truck is fully under warranty. Gas cap first.
Symptoms
- Check engine light with P0455
- Possible fuel smell near bed
- Gas cap not seating
- EVAP readiness incomplete
Top Causes
- Gas Cap Seal (Very High Likelihood): Loose or factory defect. Warranty-covered.
- EVAP Canister Vent Valve (Medium Likelihood): Stellantis vent valve. Warranty-covered.
- Purge Solenoid (Medium Likelihood): Stuck open. Warranty-covered.
- Vapor Line (Low Likelihood): Assembly issue. Warranty-covered.
- PCM Calibration (Low Likelihood): Software update for new engines. Warranty-covered.
What to Do
Tighten the gas cap and drive 2–3 days. If P0455 persists, visit your Ram dealer for free warranty repair using wiTECH diagnostics.
Warranty
Your 2024 Ram 1500 is covered by Stellantis'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 engine, 4WD, towing, or any truck features.