The Ultimate Guide to the P0446 Code Empowering Automotive Enthusiasts

... code is set when the computer (ECM/PCM) reads an issue with the vent valve, which is a part of the Evap system for emissions. The P0446 error ... this code is pointing to the vent solenoid itself being electrically bad, so you would need to replace it, it's unlikely the gas cap replacement ... A P0446 error code indicates an evaporative emission control system (EVAP) vent control circuit malfunction. Simply put, the computer has ... Check Engine Code P0446 · 1) malfunctioning Evaporative Emission Canister Vent Solenoid Valve or pinched vent hose · 2) evap canister filter ... I understand that this code refers to the vapor canister. However, I wanted to see if there is anything in particular that I have to look for ... 1999 - 2016 Super Duty - Canister Vent Selonoid Testing PO446 - My 2011 F350 with the 6.2L gas engine has a CEL and code PO446. P0446: Purge airline is blocked or high flow resistance in the EVAP canister. 03-30-2014 10:55 AM ... Truck has a misfire that is only noticeable when cruising between 40 and 50 MPH, which is even worse when you try to go uphill at those speeds. CEL came on a week after removing my throttle body to clean it, code P0446. - No vacuum leaks - Verified evap canister vent valve is ... P0446: Evaporative Emission Vent System Performance help · Fuel tank sensor or its wiring · 5v reference circuit/wiring · Evap vent solenoid/wiring ...