Hello I am having trouble with fixing check engine light code p0131 on my 2000 acura tl. I have replaced the sensor a couple months ago. Recently it has come back and makes my tcs light come on as well I have tried to erase the code and check the sensor but it will come back on. As for the tcs light it goes away after being turned off and then both come back on. Any help with help if you can leave images of locations or diagram that will help.

 

Here's a download link to the 2G TL service manual.
It will empower you, with all its images and diagrams, to diagnose and fix any issue your car may present:
!!!!!!!!ACURA 99-03 TL SERVICE MANUAL.pdf (dropbox.com)
Good Luck.

 

Check page 11-109 in the manual for troubleshooting the P0131 code. The TCS gets an input for speed, if the O2 sensor is bad the PCM could be misinterpreting the input causing the TCS to turn off and the light to come on.
What brand and part number did you use when you replaced one of the O2 sensors? Did you replace both sensors, if not which one did you replace?