Solving P0446 on Your 2024 Infiniti Q50
A P0446 code on your 2024 Infiniti Q50 signals an EVAP vent control circuit malfunction. The Q50 uses the VR30DDTT 3.0L twin-turbo V6 on the FM platform. Infiniti's EVAP system features a canister vent control valve, PVCV, and Nissan's leak detection pump.
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 Control Valve Defect (High Likelihood): Manufacturing variation. Warranty-covered.
- PVCV (Purge) Issue (High Likelihood): Turbo engine stress on purge valve. Warranty-covered.
- ECU Software Calibration (Medium Likelihood): EVAP monitoring update. Warranty-covered reflash.
- Vent Valve Wiring or Connector (Medium Likelihood): Factory assembly issue. Warranty-covered.
- Gas Cap Seal (Low Likelihood): Factory fit. Warranty-covered.
What to Do
Take your Q50 to an Infiniti dealer. CONSULT diagnostics and all EVAP repairs are free under warranty.
Full Warranty Coverage
Your 2024 Q50 is covered by Infiniti's 4-year/60,000-mile basic and 6-year/70,000-mile powertrain warranty. All EVAP repairs are free.
Safe to Drive?
Yes. P0446 doesn't affect your Q50's twin-turbo performance, transmission, or driving dynamics. Red Sport 400 capability is fully maintained.