[Rob175]

Thanks for the reply BUT every description of issues causing the throwing a CEL P0446 code says check or replace the fuel cap or its o-ring FIRST. Additionally many (not all) reported that after they replaced the gas cap they no longer had the P0446 CEL code.

I realize a new cap didn't help everyone but certainly it did for many reporting as much.

I was just asking if filling the fuel tank ...or even "overfilling" the fuel system can cause a problem with the evaporative canister.......somewhere in my mind I seem to recall reading of that possibility after filling up too much.