Conquering the P0446 Code Your Step-by-Step Guide to Automotive Mastery

P0446 is a result of a test failure. The PCM closes the vent solenoid and opens the purge valve. It then monitors the fuel tank pressure sensor. How to fix a Chevy / GMC P0446 engine Code: Evaporative Emission Control System Vent Control Circuit Malfunction Amazon Link to Smoke ... CEL came on a week after removing my throttle body to clean it, code P0446. - No vacuum leaks - Verified evap canister vent valve is ... I keep getting code PO466 Evaporative emission control system vent control circuit. It comes on for a couple days then goes off and then reappears again. The P0446 code on a Chevy Silverado signals a problem with the EVAP system vent control circuit, usually due to a faulty vent control valve, ... The code only means there is something wrong somewhere in the entire vent solenoid circuit, not necessarily with the vent solenoid itself. Vapor Canister Purge Valve– One of the most common causes of the P0446 code is the vapor canister purge valve. It's really easy to replace. It could be the canister vent valve sticking, it could be a line leaking or it could be the canister itself. P0446 Evaporative Emission Control System Vent Control Malfunction · Navbar Menu · P0446 Evaporative Emission Control System Vent Control ... Most commonly, this is a problem with the EVAP Vent Valve. However, this can also be due to a faulty Fuel Tank Pressure Sensor or a clogged EVAP ...