Unraveling the Mysteries of the P0446 Code A Step-by-Step Guide

P0446 Evaporative Emission Control System Vent Control Malfunction · Navbar Menu · P0446 Evaporative Emission Control System Vent Control ... Check Engine Code P0446 · 1) malfunctioning Evaporative Emission Canister Vent Solenoid Valve or pinched vent hose · 2) evap canister filter ... OK, here'e the deal: 1997 2.2 Legacy CEL on. Fault code 446("Evaporative Emmission Contrl System Vent Malfunction"). This same code had come ... The code P0446 is set when the engine computer recognizes a fault or restriction at the vent control part of the Evaporative emission control system. P0446 EVAP Vent Problem. Getting The Parts Store To Give You Codes Is Not Fixing The Issue.. 36K views · 2 years ago #automotiverepair ... This code indicates that there's a problem with the vent valve, the control circuit for that valve, or a blocked vent valve in the EVAP system. This can be caused by a canister close valve being stuck closed, but more likely, it is a restricted air inlet filter at/near the charcoal ... Code P0446 indicates that there is an improper voltage drop in the EVAP Vent Valve circuit, which can be caused by either too little or too much electrical ... So my truck is giving the code P0446 which is evap emission control system vent circuit malfunction. I have read a bunch of the posts on ... It could be as simple as the gas cap not seating correctly or could be, like in my case, the fuel line was rusted and leaking pressure and gas.