Mastering the PO446 Code Diagnosing Evaporative Emissions System Faults

P0446 is for a partially or fully plugged evap system. Stuck closed vent valve, pinched line, plugged vent valve, etc. 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 ... 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. 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. General Technical & Electrical - P0446 EVAP Vent Control Circuit - Hey everyone! My 2007 2.3L gave a code P0446 : Evaporative Emission ... My check engine light is on and the code is P0446. Information I know. Definition: EVAP purge/vent solenoid circuit condition. Explanation: The ... Let's have a look at this Chevrolet Cobalt that came with a code P0446 for the EVAP Vent Solenoid Performance. P0446 is triggered when the ECM has detected improper resistance in the circuitry to activate the vent control valve. Check the Ground and power ... This code is directly connected to the vent valve, vent valve wires, and vent valve tube. So you'll see it if there's wiring issues, a leak in the tube, or ... P0446 EVAP Vent Problem. Getting The Parts Store To Give You Codes Is Not Fixing The Issue.. 36K views · 2 years ago #automotiverepair ...