Unlocking the Secrets of the PO446 Code Evaporative Emissions Demystified

The code is for a blockage in the ventilation system though, which should be either a clogged filter in the canister, a bad shutoff valve or a ... P0446 means the vent valve in the EVAP system is malfunctioning. Our expert mobile mechanics can diagnose and fix your P0446 trouble code wherever you are. 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 ... Code pulled is P0446: Evaporative Emission Control System Vent Control Circuit. Went to Mazda for a diagnostic out-of-warranty ($120). They found the issue was ... i'm trying to solve my ECU P0446 light. Just changed the Gas cap, old one was pretty lose. I did restore the codes ( temporary and confirmed ) ... 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 ... The P0446 code on a Chevy Silverado signals a problem with the EVAP system vent control circuit, usually due to a faulty vent control valve, ... I had P0446 and I cleared it. The code come again after 7 days in winter and after 30-45 days in summer. I replaced the vent valve and the ... A P0446 error code indicates an evaporative emission control system (EVAP) vent control circuit malfunction. Simply put, the computer has ... 2005 Prius (186k miles) throwing the P0446 error code (Evap Emission Control System Vent Control Malfunction). It was in the shop twice last year for this.