Rick's Free Auto Repair Advice

Posts Tagged: canister closed valve

P0446 Toyota EVAP vent solenoid

Fix code P0446 Toyota EVAP vent solenoid Toyota is having a lot of problems with failures in their EVAP systems. The most common code P0446 pertains to the vent solenoid. This is the solenoid that opens to allow air into the charcoal canister during a purge cycle. The solenoid is normally closed. When it is energized it opens and allows air in. If it sticks open, the pressure sensor on the charcoal canister won’t see an increase in vacuum and will set code P0446. However, there are two solenoid valves; … Read More


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