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04 chevy avalanche. failed inspection. OBD11

04 chevy avalanche. failed inspection. OBD11 failue code is PO446. What does this code mean?

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Hi, a P0446 means Evaporative Emission Control System Vent Control Circuit Malfunction

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Posted on Feb 06, 2010


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Po452 and po446 on 04 chevy silverado have replaced fuel pressure sensor and reset but code po452 keep poping up

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The following codes show up on my 2006 chevy colorado PO106 PO116 PO455 PO446 PO496 PO036 PO030

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What does an obd11 code of po446 mean on a 2000 chevy silverado 1500?

It is for the canister vent solenoid. Gm has a service bulletin out on this. They have changed the location of the solenoid. They have a repair kit for about 100 dollars that comes with the solenoid and the lines and instructions for moving the solenoid to its new location.

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I have a 2005 chevy avalance code po894 came up what does this mean

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