When truck is warmed up cruising down the road cel light comes on and stay on for a little bit then shut off. It does this every time I take it out. The codes are 13-o2 sensor open circut and code 54-fuel pump circuit low voltage. What I’ve done to check 02 sensor with ign on engine off .3 volts at the signal wire. With code 54 I had engine idling and unplugged fuel pump relay and it still stayed running. Again these are soft codes and I sure appreciate any advice.