PO446 Code The Key to Evaporative Emissions System Restoration

A fix for the P0446 code is often related to replacing the vent valve solenoid. Two other common fixes for the P0446 code are blowing out the dust that is ... Truck has a misfire that is only noticeable when cruising between 40 and 50 MPH, which is even worse when you try to go uphill at those speeds. Troubleshooting KIA P0446 Code, "Evaporative Emission Control System Vent Control Circuit Malfunction." 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 ... P0446 is not an electrical issue--it indicates a physical blockage in the vent portion of the evap system. Engine light on with EVAP code in your car or truck? Rapidly find the problem in your EVAP system. 1A Auto: Repair Tips & Secrets Only Mechanics Know DTC P0446 or P1450 indicates that Self-Test has detected the Evaporative Emission Control System has excessive fuel tank vacuum. 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 have an 03 tundra v8 that sets a P0442 & P0446 code every spring. There is a toyota service bulletin for P0446 that says to test and replace the VSV valve. Chased around a P0446 code for a week and finally fixed it today. 1. Replaced gas cap - code came back 2. Replaced Vent valve - $30 - code came back 3. Took ...