PO161 what is it?

[97NYstanGT]

my tune doesn't work too good so i returned it back to stock and waiting for another tune.
recently i started getting that code, it's not in the book that i got with my SCT. i couldn't find it online either so what is it?

 

[Quick281]

o2 sensor fault.... bank 2 sensor 2. should be the rear o2 on the right side

 

[97NYstanGT]

oh it's good then. i have no cats, i wonder why only one is throwing the code. oh and idk why but i didn't ever get a cat code even before i got the tune.

 

[Quick281]

that one is bad.

 

[97NYstanGT]

i don't care about rear O2's i tuned the car up again and the code is gone

 

[roush360r]

if you dont have cats and your check engine light was not on then it doesnt matter if a o2 sensor is bad, it should be off any way. did you tell them to turn off the rear o2 sensors?

 

[97NYstanGT]

yeah, but i ran without the tune so that's why i got the code, now i installed the tune again and the code is gone

 

[roush360r]

yea it will set a code because the computer is taking input from the rear o2's thinking it still has cats. in the tune its most likely turned off. at least it should be. if its off with the tune then your all good

 

[97NYstanGT]

i know, but the first 6 months i drove without a tune, unless the car was tunes before i got it. it didn't throw codes

 

[roush360r]

well if theres no cats it shouldve set codes. if the lights not on now dont worry about it.