P0446 Code A Diagnostic Adventure for Automotive Enthusiasts

And P0446 means the vent valve/circuit for the EVAP system is malfunctioning. Tester. It_s-Me October 31, 2022, 11:48am 4. Troubleshooting KIA P0446 Code, "Evaporative Emission Control System Vent Control Circuit Malfunction." Code P0446 means the car's computer has detected a problem with the EVAP system vent valve. The EVAP system is primarily composed of the gas tank, gas cap, ... My engine light came on for this problem (P0446) Evaporative Emission System Vent Control Circuit... additionally i cant seem to pump more that about $.35 worth ... Check Engine Code P0446 · 1) malfunctioning Evaporative Emission Canister Vent Solenoid Valve or pinched vent hose · 2) evap canister filter ... This Diagnostic Trouble Code (DTC) tests the Evaporative Emission (EVAP) system for a restricted or blocked EVAP vent path that would cause excess amounts of ... P0446 is a BLOCKAGE in the EVAP system. My guess is the vent valve on the charcoal canister is bad. It means the vacuum in the tank is too high. The P0446 error code signifies a problem with the evaporative emission control (EVAP) system's vent control circuit. this code is pointing to the vent solenoid itself being electrically bad, so you would need to replace it, it's unlikely the gas cap replacement ... Truck has a misfire that is only noticeable when cruising between 40 and 50 MPH, which is even worse when you try to go uphill at those speeds.