P0455 on Your 2024 Jeep Cherokee
A P0455 on your 2024 Cherokee means the PCM found a large EVAP leak. Your Cherokee is fully under warranty—check the gas cap first, then visit the dealer if needed.
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 defective. 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 may be needed. Warranty-covered.
What to Do
Tighten the gas cap and drive 2–3 days. If P0455 persists, take it to the dealer for free warranty repair.
Warranty
Your 2024 Cherokee is covered by Stellantis's 3-year/36,000-mile warranty through 2027. Federal emissions warranty (8yr/80k) extends through 2032.
Safe to Drive?
Yes. P0455 doesn't affect the engine, 4WD, or any Cherokee features.