Investigating P0446 on Your 2022 Infiniti QX60
A P0446 code on your 2022 Infiniti QX60 indicates an EVAP vent control circuit malfunction. The all-new 2022 QX60 uses a 3.5L V6 with a 9-speed automatic on a platform shared with the Nissan Pathfinder. Infiniti's EVAP system uses a canister vent control valve and the Purge Volume Control Valve (PVCV), with a Nissan-specific leak detection pump for monitoring.
The Infiniti basic warranty (4yr/60k) should still be active—notably longer than most competitors. The powertrain warranty (6yr/70k) extends through 2028.
Clues and Symptoms
- Check engine light with P0446
- Fuel fill difficulty
- EVAP readiness monitor incomplete
- Possible fuel odor
Top Suspects
- Canister Vent Control Valve Failure (High Likelihood): The vent control valve is the primary P0446 component. First-year redesign may have early production variations. Replacement costs $130–$250.
- PVCV (Purge Volume Control Valve) Malfunction (High Likelihood): Nissan/Infiniti's purge valve can stick. Replacement runs $120–$230.
- Leak Detection Pump Issue (Medium Likelihood): Nissan's EVAP monitoring uses a dedicated pump that can fail. Replacement costs $150–$300.
- Vent Valve Wiring or Connector (Medium Likelihood): Connector issue on the new platform. Repair runs $80–$180.
- Gas Cap Seal (Low Likelihood): Worn seal. Replacement is $12–$30.
How to Investigate
Under warranty, go to an Infiniti dealer for CONSULT diagnostics—the factory tool provides commanded vent valve and PVCV testing. For DIY, scan all codes and check the gas cap seal first. The 2022 QX60 is a first-year redesign, so check for applicable TSBs.
Warranty and Cost
Infiniti's basic warranty (4yr/60k) should be active. The powertrain warranty (6yr/70k) covers through 2028. Under warranty, all repairs are free.
Safe to Drive?
Yes. P0446 doesn't affect your QX60's V6 engine, 9-speed transmission, AWD, or three-row capability.