P0455 Code: 2024 Lincoln – What It Means & Cost to Fix

2024 Lincoln Navigator P0455: Large EVAP Leak — Warranty Guide

P0455 on Your 2024 Lincoln Navigator

A P0455 on your 2024 Navigator means a large EVAP leak. The 3.5L twin-turbo EcoBoost is fully under Lincoln's premium 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. Canister Vent Solenoid (Medium Likelihood): Ford EVAP valve. Warranty-covered.
  3. Purge Valve (Medium Likelihood): Factory defect. Warranty-covered.
  4. EVAP Canister (Low Likelihood): Manufacturing issue. Warranty-covered.
  5. Software Calibration (Low Likelihood): PCM update. Warranty-covered.

What to Do

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

Warranty

Your 2024 Navigator is covered by Lincoln's 4-year/50,000-mile warranty through 2028. Federal emissions (8yr/80k) extends through 2032.

Safe to Drive?

Yes. P0455 doesn't affect twin-turbo power, 4WD, towing, or any features.

Frequently Asked Questions

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