P0455 on Your 2024 Acura TLX
A P0455 on your 2024 TLX means a large EVAP leak. Whether you have the 2.0L turbo or Type S 3.0L turbo V6, your vehicle is fully under Acura warranty. Gas cap first.
Symptoms
- Check engine light with P0455
- Possible fuel smell
- Gas cap not clicking
- EVAP monitor incomplete
Top Causes
- Gas Cap Seal (Very High Likelihood): Loose or factory defect. Warranty-covered.
- Canister Vent Shut Valve (Medium Likelihood): Honda/Acura valve. Warranty-covered.
- Purge Solenoid (Medium Likelihood): Factory defect. Warranty-covered.
- Charcoal Canister (Low Likelihood): Manufacturing issue. Warranty-covered.
- Software Calibration (Low Likelihood): ECU update. Warranty-covered.
What to Do
Tighten the gas cap and drive 2–3 days. If P0455 persists, your Acura dealer will diagnose and repair free under warranty.
Warranty
Your 2024 TLX is covered by Acura's 4-year/50,000-mile warranty through 2028. Federal emissions (8yr/80k) extends through 2032.
Safe to Drive?
Yes. P0455 doesn't affect turbo performance, SH-AWD, or any features.