Check engine PO446

Question

That not telling me what need to be fix.

Answer 1

Hi there

Usually this code points to the vent control valve on the charcoal canister. There could be other issues, but as a general rule it's either the vent control valve or a problem with the canister or lines. Here is some more info on the code.

P0446 CHEVROLET - Evaporative Emission Vent System Performance

Read more: https://www.autocodes.com/p0446_chevrolet.html