2024 Infiniti QX80 P0455: Large EVAP Leak — Warranty Guide

P0455 on Your 2024 Infiniti QX80

A P0455 on your 2024 QX80 means a large EVAP leak. The full-size luxury SUV is fully under Infiniti's generous warranty. Gas cap first.

Symptoms

• Check engine light with P0455
• Possible fuel smell
• Gas cap not seating
• EVAP monitor incomplete

Top Causes

1. Gas Cap Seal (Very High Likelihood): Loose or factory defect. Warranty-covered.
2. Vent Control Valve (Medium Likelihood): Nissan EVAP valve. Warranty-covered.
3. Purge Volume Control Valve (Medium Likelihood): Factory defect. Warranty-covered.
4. Charcoal Canister (Low Likelihood): Manufacturing issue. Warranty-covered.
5. Software Calibration (Low Likelihood): ECM update. Warranty-covered.

What to Do

Tighten the gas cap and drive 2–3 days. If P0455 persists, your Infiniti dealer will diagnose and repair free.

Warranty

Your 2024 QX80 is covered by Infiniti's 4-year/60,000-mile warranty through 2028. Federal emissions (8yr/80k) extends through 2032.

Safe to Drive?

Yes. P0455 doesn't affect the engine, 4WD, towing, or any features.

Frequently Asked Questions