O2 Sensor Problems

[hvychve]

bank 1 sensor 2, is the sensor on the same side as cylinder #1 but behind the catalytic conver, bank 1 sensor 1 is going to be on the same side as cylinder one in front of the cat. with this known, now you need a meter that can messure voltage from .2 volts to .9 volts, at the signal wire of the o2, this is the wire that goes back to pcm to indicate what the oxygen content is of the exhaust, on the pre o2s, they better be fluctuation between .2 and .9 of a volt of a trouble code will set, I like to monitor freeze frame data before I clear the codes, this is info of when the code set and at what criteria of certain other inputs and data, but you have whats called a hard code, it is cleared and comes right back,I went to look up info for you on my all data , but came up empty handed , you gave no year or body style and engine size, po137 is switch rate issues, another words the computer didnt see the o2 switching , either you have wires pinched , or open from o2 to pcm (computer,) I think I remember reading you had already changed o2's , so I would guess you have eliminated that already, the other code you have is the same code, it just specifies vehicle specific with the p1133, the one instead of the 0 indicates vehicle specific, its the same as your first code, from what I can see you have bank 1 sensor 2 issues, I would find the correct schematic, (first by knowing what your working with) and pin the signal wire and see if its actually swithing voltage, and can it be foreced rich and lean, and does it show a change, lean being .2volts and rich being .9 volts,
This o2 also has whats called a heater, it has two wires, one is 12volts and another is a ground, you can check to see if you have both with a volt meter, you can also verify if the heater is shorted by checking continuity across the o2 itself to verify its not shorted. if o2 is switching at o2 , I would than want to see it either on a scan tool data parameter or back pin it at the pcm with a lab scope or volt meter , I hope I havent confused you, but on a post o2, (which is an o2 that is behind the cat), the computer is not looking for a switch rate, it wants to see a steady voltage of about .45 volts, this would indicate cat is working , if its switching , the cat is no good, the only reason for the o2 sensors behind the cat, is to monitor cat efficiency, and the 02 sensors upstream of the cats are for fuel control and trim correction.......good luck