Unleashing the Power of Diagnostics The P0446 Code and Beyond

DTC P0446 or P1450 indicates that Self-Test has detected the Evaporative Emission Control System has excessive fuel tank vacuum. It means you have a open or short in the vent cntrol valve that is allowing fuel vapor to be let into the air and not allowing the fuel system ... I've had this P0446 Evap code that keeps popping up, and it's been difficult to fill up the tank without the nozzle clicking off several times. What does code P0446 mean? When code P0446 shows up on a diagnostic scan of your vehicle, a technician knows that there is something going wrong with your EVAP ... Code P0446 relates to the Evap. ShutoffValve which is located under the truck near the spare tire. Read the information in the pdf and decide if ... P0446 Evaporative Emission Control System Vent Control Malfunction · Navbar Menu · P0446 Evaporative Emission Control System Vent Control ... It deals with the evap system for the fuel tank. From what I read online, it's fine to drive with it, which I guess I'll have to because the dealer can't see ... 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 ... What is a P0446 Code? Better yet, what the heck is a Evaporative Emission System Vent Control Circuit? Well I ran into this problem with my ... This can be caused by a canister close valve being stuck closed, but more likely, it is a restricted air inlet filter at/near the charcoal ...