P0455 on Your 2024 Jeep Grand Wagoneer
A P0455 on your 2024 Grand Wagoneer means the PCM found a large EVAP leak. Whether you have the 6.4L HEMI or the Hurricane twin-turbo inline-6, everything is under warranty. Check the gas cap first.
Symptoms
- Check engine light with P0455
- Possible fuel smell
- Gas cap not seating
- EVAP monitor incomplete
Causes Ranked
- Gas Cap Seal (Very High Likelihood): Loose or factory defect. Warranty-covered.
- EVAP Canister Vent Valve (Medium Likelihood): Manufacturing issue. Warranty-covered.
- Purge Solenoid (Medium Likelihood): Factory defect. Warranty-covered.
- Vapor Line (Low Likelihood): Assembly issue. Warranty-covered.
- PCM Calibration (Low Likelihood): Software update. Warranty-covered.
What to Do
Tighten the gas cap and drive 2–3 days. If P0455 persists, visit your dealer for free warranty repair. As a premium Jeep, expect concierge-level dealer service.
Warranty
Your 2024 Grand Wagoneer is fully covered through 2027 (basic 3yr/36k) and 2032 (federal emissions 8yr/80k).
Safe to Drive?
Yes. P0455 doesn't affect the engine, 4WD, air suspension, towing, or any luxury features.