code 1 is heated o2 sensor circuit.
code 41 is heated 02 sensor heater.
code 43 is fuel system problem.

for code 43 possible causes are -- faulty map sensor, faulty o2 sensor, fuel pressure regulator. so i would perform a fuel pressure test to ensure that you are getting proper fuel pressure. as far as the o2 code-- you either have a bad o2 sensor or bad wiring going to the o2 sensor. oil can also contaminate the o2 sensor i.e.- oil from oil changes/leaks.
clear the codes and see if they return.