Solving P0446 on Your 2024 Lincoln Navigator
A P0446 code on your 2024 Lincoln Navigator signals an EVAP vent control circuit malfunction. The Navigator uses the 3.5L twin-turbocharged V6 on the T3 body-on-frame platform with a PCM-controlled canister vent solenoid.
Under full warranty, this is a no-cost dealer repair with Lincoln's premium service experience.
Symptoms Present
- Check engine light with P0446
- Fuel fill difficulty
- EVAP readiness monitor incomplete
Top Suspects
- Canister Vent Solenoid Defect (High Likelihood): Manufacturing variation. Warranty-covered.
- PCM Software Calibration (High Likelihood): EVAP monitoring update. Warranty-covered reflash.
- Purge Valve Issue (Medium Likelihood): Defective purge valve. Warranty-covered.
- Vent Solenoid Wiring (Medium Likelihood): Factory assembly issue. Warranty-covered.
- Gas Cap Seal (Low Likelihood): Factory fit. Warranty-covered.
What to Do
Take your Navigator to a Lincoln dealer. FDRS diagnostics and all EVAP repairs are free under warranty. Lincoln dealers typically provide premium loaner vehicles.
Full Warranty Coverage
Your 2024 Navigator is covered by Lincoln's 4-year/50,000-mile basic and 6-year/70,000-mile powertrain warranty. All EVAP repairs are free.
Safe to Drive?
Yes. P0446 doesn't affect your Navigator's twin-turbo power, 4WD, air suspension, towing, or any luxury features.