The EVAP vent control valve circuit is malfunctioning.
Informational only. Consult a qualified mechanic.
Inspect and replace the vent valve.
The P0446 OBD-II diagnostic trouble code (DTC) indicates: evap vent control circuit. This is a low-severity powertrain code that your vehicle's onboard diagnostics system triggers when the evap vent control valve circuit is malfunctioning. If your check engine light is on with this code, the vehicle is generally safe to drive, but you should have it inspected soon.
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