What does OBDII code P0056 and P0057 mean in a Cadillac?

Question

What does OBDII code P0056 and P0057 mean on a Cadillac?

Answer 1

P0056 H02S heater control circuit Bank 2 Sensor 2

P0057 H02S heater control circuit low  Bank 2 Sensor 2

This is more power supply for the heater control , The H02S heater of the sensor can be shorted internally or the harness is not supplying the power power to the heater circuit of the 02 sensor