I have this low purge flow code setting soon after erasing it. Previously I had the code for excessive flow and replacing the purge valve near the engine (which tested bad) and it took care of that. I assume for this code I need to check on the canister itself and the vent valve? How are they accessed?
In the service manual it reads an looks like all models were assembled the same way (in that area). So all the problems others have posted in the past, in getting to and or replacing any components back there, looks to be the same for you.
Just realized I put on a gas cap from a Chevy Cruze to address the P0455 large evap emissions leak I had before. That code is gone but this cap might not be fully compatible and could be causing the current low purge flow code from different venting specs within the cap? Think I'll get a new original cap first.