EVAP Vent Control Circuit Malfunction
Powertrain Code · Low
What does P0446 mean?
The EVAP vent control circuit has an electrical issue preventing proper vent valve operation.
System: EVAP System
P0446 is a powertrain diagnostic trouble code indicating evap vent control circuit malfunction. This code is classified as low severity, which means: minor issue — monitor and fix at convenience. We have vehicle-specific diagnostic data for 43 models below. Select your vehicle for tailored causes, symptoms, and repair cost estimates.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.
See causes, symptoms, and repair costs for P0446 on specific vehicles: