P0446 Code The Ultimate Guide to Diagnosis and Troubleshooting

Unlikely a bad charcoal canister but possible. P0446 would NOT set for a loose gas cap. A loose gas cap would set an EVAP Small Leak code while ... The P0446 codes triggered when an improper voltage signal is sent to Engine Control Module (ECM) through EVAP canister vent control valve. 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. The code reads Evaporative Emission Control System Vent Control Circuit Malfunction, but I've come to believe that any of the EVAP codes can be a result of the ... I had a check engine light with P0446 code and no hiss when opening the gas cap so I started with changing the gas cap - no change P0446 Evaporative Emission Control System Vent Control Malfunction · Navbar Menu · P0446 Evaporative Emission Control System Vent Control ... The P0446 error code signifies a problem with the evaporative emission control (EVAP) system's vent control circuit. 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. Code P0446 relates to the Evap. ShutoffValve which is located under the truck near the spare tire. Read the information in the pdf and decide if ... 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.