I had a CEL come on yesterday and went to get it scanned and code P1113 came up. The tech thought it may have something to do with an O2 sensor but wasn't sure. Could someone please let me know what this code related to. Also, what usually triggers this code? Is it something to be concerned about? FYI - the car is well maintained. It's a 2000 Passat GLS 1.8T ATW. Thanks all!