Engine light again and p0446 engine code

SOURCE: trouble code P0446

P0446 is an EVAP code.Charcoal canister vent control valve; commonly located under the trunk, at the canister.

SOURCE: car codes

When you have P0440, P0441 and P0446, it is a very good bet that the fuel cap was loose, or the fuel cap rubber seal is compromised. You will get all three of those codes every time that the cap is loose. Always make sure that the fuel cap is as tight as you can get it after you refuel.

SOURCE: p0446 code

Hi, check out this article, it's detailed on what to check: http://www.obd-codes.com/p0446

Mike Butler

• 6674 Answers
• Posted on Apr 11, 2009

SOURCE: check engine light on,results in code P0446-fuel emission cotrol

Well it could be as simple as a new gas cap, or clean seal on it & tighten again. There are a few other items in the system too, but one common one is the vapor canister gets plugged up with dust & dirt.

SOURCE: check engine code "P0446 Evap Control System Vent Control Circ"

Unfortunately, this code has nothing to do with the gas cap....
A code P0446 could mean one or more of the following has happened:

• Faulty vent valve
• Open, short or excessive resistance on Vent valve control circuit
• Blockage of vent valve
• Bad PCM

• Replace Vent valve
• Repair open, short, or resistance problem in control circuit
• Repair open, or short, or resistance problem in power circuit
• Replace PCM