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when I had it scanned the code PO446 came up "Evaporative Emmission Control System Vent Control Circuit" I was told by a friend it is a typical ... Hey Andres, I understand you have fault codes P0446, P0453 and P0463. These faults would most likely indicate the vent solenoid is faulty. I would also ... What Does Code P0446 Mean? · P0446 definition: Evaporative Emission Control System Vent Control Circuit Malfunction · Issue Severity: LOW– Continued driving for a ... This generic OBD-II code indicates that the evaporative vent valve in the emission control system is malfunctioning. Are you troubled and perplexed by the P0446 trouble code, as your check engine light causes anxiety and uncertainty about your vehicle's ... How to fix a Chevy / GMC P0446 engine Code: Evaporative Emission Control System Vent Control Circuit Malfunction Amazon Link to Smoke ... Share your videos with friends, family, and the world. P0446 is a "vent control circuit malfunction" so the problem should be located somewhere in the vent valve or its wiring. If it were a leak it would be P0442. Let's have a look at this 2004 Chevy Truck that was dropped off at SMA from another shop that was having trouble diagnosing the classic ... Cyclops Light - https://amzn.to/48BiJbG Easy to use handheld - https://amzn.to/46nMFrz Budget friendly, professional style scanner ...