P0030 THEN AFTER P0053?? CHEVY AVEO 09 HELP

Question

CHEVY AVEO LT 09CODE P0053 AFTER O2 SENSOR BANK 1 REPLACEMENT WITH BOSCH SENSOR CLEARED FIRST CODE WITH SCANNER, NOW P0053 SHOWS UP

I NEED TO KNOW WHY IT WOULD SHOW UP
WHAT I NEED TO KNOW ABOUT THE CODE AND TO CHECK IN ORDER TO CONTINUE TO REMEDY THE PROBLEM.
CHEVY AVEO LT 09CODE P0053AFTER O2 SENSOR BANK 1 REPLACEMENT WITH BOSCH SENSORCLEARED FIRST CODE WITH SCANNER, NOW P0053 SHOWS UP