ATTS indicator light (on your gauges)

I have 2000 prelude SH. I had my dc headers installed, and now my ATTS(active torque transfer system) light is lit, and the check engine light is lit as well. Dude from the shop did not replace nor misplace the
o2 cencor. How can i get rid of those lights on my site?

Reset the ECU - Didnt the dude at the shop have scanner to check & clear your codes correctly?

What he did was he got the code 41. which is o2 cencor. Im not sure how to reset my ECU. what we did was we unhook the baterry both+/-
for 2 mins, put it back together, and those lights were still lit.