I have a 1999 Nissan Sentra with a 1.6 Liter engine and automatic transmission. The check engine light is on and the code is P0446, Evap Emission Control System Vent Circuit Malfunction. I checked my Haynes manual, but there is nothing in the book about this code. Is there a electrically operated valve some where that should be replaced? If so, can someone tell me where it is located? Or is there some other item I should be looking at?

P0446 Evap Canister Vent Control Solenoid It is mounted on the canister.
The solenoid may be the problem. Who did the diag? Who'll do the repair?

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Originally Posted by CaptainRich

P0446 Evap Canister Vent Control Solenoid It is mounted on the canister.
The solenoid may be the problem. Who did the diag? Who'll do the repair?

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The diag was done at a local auto parts store (Advanced Auto I believe) using their hand held computer. If it is a matter of replacing a vent valve, as long as it is a one person job, I will give it a try. I assume that I can test the vent valve by applying 12 VDC across the coil. I realize that it can also be a connector or wiring problem especially if the connector is exposed to rain, road salt, etc.