P0455 on Your 2024 Lexus RX
A P0455 on your 2024 RX (5th generation AK30) means a large EVAP leak. Whether you have the RX 350 (2.4L turbo), RX 350h, or RX 500h (2.4L turbo hybrid), your vehicle is fully under warranty. Check the gas cap first.
Symptoms
- Check engine light with P0455
- Possible fuel smell
- Gas cap not seating
- EVAP monitor incomplete
Top Causes
- Gas Cap Seal (Very High Likelihood): Loose or factory defect. Warranty-covered.
- VSV (Vacuum Switching Valve) (Medium Likelihood): Lexus purge control. Warranty-covered.
- Charcoal Canister (Low-Medium Likelihood): Factory issue. Warranty-covered.
- Purge Valve (Low Likelihood): Factory defect. Warranty-covered.
- ECU Software (Low Likelihood): Calibration update. Warranty-covered.
What to Do
Tighten the gas cap and drive 2–3 days. If P0455 persists, visit your Lexus dealer for free warranty repair using Techstream diagnostics.
Warranty
Your 2024 RX is covered by Lexus' 4-year/50,000-mile warranty through 2028. Federal emissions (8yr/80k) extends through 2032.
Safe to Drive?
Yes. P0455 doesn't affect the turbo engine, hybrid system, AWD, or any features.