Troubleshooting P0446 Advanced Techniques for EVAP System Diagnostics

General Tech Help - PO446 code and Misfire @ 2,4, and 6 - What is the main problem with trouble code PO446? Emission control? If you drive in a dusty/dirty enviroment, the EVAP canister vent valve can become blocked with dirt and crud. ... and a new bracet for the valve, ... The code - P0446: EVAP Emission System vent control circuit. This can get triggered due to a bad connection, faulty canister close valve. ... po446, pressure, sensor, tank · Subscribe. Related Topics. evap code p0446....?helpppp and opinions? throwing code p0446 · p0446 evap canister ... 2004 Pathfinder and she got a p0455 code (evap gross leak, large evap leak). Took to the dealer, they changed charcoal canister, vent valve, purge valve. The P0446 means that the evap vent valve isn't responding properly, so either it's stuck open or stuck closed. Share your videos with friends, family, and the world. Hey Andres, I understand you have fault codes P0446, P0453 and P0463. These faults would most likely indicate the vent solenoid is faulty. I would also ... 2004 - 2008 Ford F150 - P0446 Where do I start - I just bought an 06 F150 5.4 I keep getting code P0446 it is a hard code even when I clear ... Let's have a look at this Chevrolet Cobalt that came with a code P0446 for the EVAP Vent Solenoid Performance.