bmw e36 error code? inpa

[zohaibrose]

i just scanned my cars ecu with the inpa software with dcan cable and i got error code 74 for the ac compressor relay which i unplugged to see if it will throw code and error code 225 and 226, which i did not intend to happen, it says its something about bank 1 and 2 cat effecicency? is this meaning either the cats are not efficent or the 02 sensors after the cat are not good? i was fixing to replace my pre cat 02 sensors since i feel some hesitation when flooring hard and have high fuel consumption. idk i cleared these codes and the 225 only comes back when im driving the car real hard. no check engine codes tho unfortunately. i dont know what else it is the car is real sluggish on the acceleration takes alot of gas, revs down pretty slow but i dont know which dumb sensor it is. i looked at the lambda 02 sensor but not sure how to identify if some sensor is not in correct working order
226 is not in this screenshot for some reason, but i did receive it.inpa code.PNG

[Eric93se]

Replace your pre cat sensors. If you want you can put your old precat sensors in the post cat spots.

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In inpa you can watch the sensors to see if they are still switching.

[zohaibrose]

I think my pre cat 02s have different part numbers for my 328i are they interchangeable

[Eric93se]

New ones are the same part number. But old/original ones may be a different length. So buy two new ones for the front, then use one of the ones to follow to the rear sensor to see if the length is good.