O2 sensor problems... please help

i installed long tube headers on the 99, and in the process i broke one o2 sensor without realizing, threw a fuel trim CEL for bank 2

i looked at my evoscan logs and the sensor at 3c was reading less than 0.1 volt at all times, the long term fuel trims were maxed to 12.5% and the short term fuel trim was stuck on 12.5% also

i replaced the sensor but it is still reading less than 0.1 volt all the time, however my short term fuel trim is taking away 6-7% consistantly so i feel like the sensor is working

did i break another o2 also, does anyone know the MUT addresses for all four o2 sensors? since i was just using the preset evoscan addresses

front o2 sensor is reading right since readings were normal even with the other 3 o2 sensors taken out

thanks in advance for any help

used good sensor with other port... i guess 3c is the bank 2 secondary sensor

anyone know what the primary sensor location is?

replaced both sensors...all good now

yes I have noticed the 98-99s run like shit when the o2 signal is missing. The OBD1 cars will just stop moving trims, but the 98-99 will add as much fuel as possible.

yep that's exactly what happened, once i put good sensors in it didn't take long for my trims to return to normal