With 32,000 miles wife's six speed TL started throwing code 2197, O2 sensor stuck lean, anyone know which sensor this code is for? Never had an O2 sensor live such a short life. Could have been a bad batch of fuel from WaWa?

 

i had the same code recently. its the front sensor. you can clearly get to it by opening the hood. heres the thing that doesnt make sense though. i replaced mine and after 100 miles the code came back! im not replacin it again. make sure your valves are set cuz if there off and need to be adjusted that could throw a code.