Solving P0446 on Your 2024 Lincoln Nautilus
A P0446 code on your 2024 Lincoln Nautilus signals an EVAP vent control circuit malfunction. The all-new 2024 Nautilus features a 2.0L turbocharged engine with 48V mild-hybrid technology. The EVAP system uses a PCM-controlled canister vent solenoid on this redesigned platform.
Under full warranty, this is a no-cost dealer repair.
Symptoms Present
- Check engine light with P0446
- Fuel fill difficulty
- EVAP readiness monitor incomplete
Top Suspects
- Canister Vent Solenoid Defect (High Likelihood): First-year redesign manufacturing variation. Warranty-covered.
- PCM Software Calibration (High Likelihood): New-platform EVAP monitoring update. Warranty-covered reflash.
- Purge Valve Issue (Medium Likelihood): Defective purge valve. Warranty-covered.
- EVAP Routing Connection (Medium Likelihood): New platform routing fitment. Warranty-covered.
- Gas Cap Seal (Low Likelihood): Factory fit. Warranty-covered.
What to Do
Take your Nautilus to a Lincoln dealer. FDRS diagnostics and all EVAP repairs are free under warranty. First-year redesigns may have TSBs addressing EVAP calibration.
Full Warranty Coverage
Your 2024 Nautilus 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 Nautilus's turbo engine, mild-hybrid system, AWD, or any luxury features.