Vehicle Questions and Answers
Welcome to the Vehicle Q&A Hub. Find answers to your automotive questions, share your experiences, and get expert advice on vehicle maintenance, troubleshooting, and more!
3548 views
2 answers
The trouble code p0446 on the Chevy Colorado indicates a problem with the evaporative emission control system vent control circuit. Essentially, this means that the EVAP or purge valve is failing to close properly. The EVAP canister, which has activated charcoal inside, is vital for preventing fuel emissions from escaping into the environment or the car's cabin. If this system malfunctions, you may detect a fuel odor in the vehicle while driving and could fail an emissions test. Although these issues are not urgent, they should be fixed promptly for health and environmental reasons. Replacing the canister should cost around $300, which is cheaper than the potential fine for driving with a faulty one.
The P0446 code in the Chevy Colorado indicates a problem with the vent control circuit of the evaporative emission control system.