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					Originally Posted by  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. 
			
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Everyone perhaps, with the exception of the factory OBD II diagnostic's manual, which says what I told you.
		  
		
		
		
		
		
		
			
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