P0130 is Bank1 Sensor1 and it comes on when the gas tank is 1/2 empty. The code showed itself the last time I went to half a tank. I checked the sensor with my Actron 9145 and it is bouncing between 1. and .0X, so that means the sensor is working (?). Maybe the gas cap is in need or replacement. I looked at and the rubber seems okay and without disassembly I could not tell if anything else was wrong. Question: New gas cap or replace sensor.???