Exceptional Fuel Efficiency Achieved PO446 as Your Secret Weapon

I recently purchased a cherry 2003 Tacoma Double Cab 3.4/Auto 4wd TRD. When I bought the truck the check engine light was on and I was given a new-in-box ... It could be the canister vent valve sticking, it could be a line leaking or it could be the canister itself. The dealer scanned and got the codes P0036 for the Second(downstream) oxygen sensor and P0446 for the EVAP system vent valve. Wondering if anyone know the ... A PO446 is a evap code haveig to do with the canister path being blocked or restricted ,and a purge selenoid valve is often time the culprit. I am also throwing a po446 code in my 98 c230 143000 miles gas cap in tact no issue there/have just replaced plugs and wires and coils for a ... Claim your FREE engine code eraser https://free.nonda.co ============================= nonda Auto DIY Center is the biggest auto DIY ... Well-Known Member. Established Member. Joined: Mar 11, 2007. Messages: 7,580. Location: poteet,texas. po446 start HX65 2003 PCED OBD SECTION 5 ... You might not have a leak, but rather a constriction in the system. It could be a defective vent solenoid, a plugged canister, etc. Read this ... Let's have a look at this Chevrolet Cobalt that came with a code P0446 for the EVAP Vent Solenoid Performance. 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.