PO446 Code Your Path to Evaporative Emissions System Troubleshooting Success

P0446 is for a partially or fully plugged evap system. Stuck closed vent valve, pinched line, plugged vent valve, etc. The part you are talking about is on the driver side inner fender, it is the part with the rubber flange that just sits on a bracket. The P0446 codes triggered when an improper voltage signal is sent to Engine Control Module (ECM) through EVAP canister vent control valve. This diagnostic trouble code (DTC) is a generic OBD-II powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996- ... CEL came on a week after removing my throttle body to clean it, code P0446. - No vacuum leaks - Verified evap canister vent valve is ... The code has nothing to due with "large leak" in EVAP system to replace the gas cap. You need to figure out the vent valve problem. Might be the ... I've had this P0446 Evap code that keeps popping up, and it's been difficult to fill up the tank without the nozzle clicking off several times. I just got the P0446 EVAP MISSION CONTROL SYSTEM VENT CIRCUIT MALF error. From reading different posting here, it could be the VSV which I thought is the ... How to fix a Chevy / GMC P0446 engine Code: Evaporative Emission Control System Vent Control Circuit Malfunction Amazon Link to Smoke ... if by some chance the gas cap is causing an issue that would throw a different p code. p0446 relates to the valve you could waste time ...