PO446 Code Evaporative Emissions Control System Malfunction - Explained

4) Take an air compressor and blow the vent valve out. 5) reinstall and clear the code and it's fixed. Now I know the updated part from gm is ... A fix for the P0446 code is often related to replacing the vent valve solenoid. Two other common fixes for the P0446 code are blowing out the dust that is ... P0446 is for a partially or fully plugged evap system. Stuck closed vent valve, pinched line, plugged vent valve, etc. A P0446 error code indicates an evaporative emission control system (EVAP) vent control circuit malfunction. Simply put, the computer has ... 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 ... Check Engine Code P0446 · 1) malfunctioning Evaporative Emission Canister Vent Solenoid Valve or pinched vent hose · 2) evap canister filter ... 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 Evaporative Emission Control System Vent Control malfunction. ... okay I got this same code recently and have not been able to figure ... 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 ... 1999 - 2016 Super Duty - Canister Vent Selonoid Testing PO446 - My 2011 F350 with the 6.2L gas engine has a CEL and code PO446.