got this code yesterday

i know it is 02 sensor bank 1 sensor 2 hig voltage

what does this mean,is it a bad sensor,r somthing else causing this code?

which sensor is it, after the cat?

check engine light only comes on after the engine warms up

thanks in advance

any help would be great

 

hey, my trruck had this code in it when i bought it last august, ce light would come on and then go back off after a couple days and then maybe a week later come on again. I just replaced both o2 sensors and no light for over a month now. funny thing is it was also throwing a code for misfire on third cylinder, even after changing plugs, wires, cap, and rotor; and that hasn't eventurned the light back on.

 

Mine had a P0138. I cleared it with a scanner, and it didn't come back on for the longest time. Then it started popping on just a few days after I'd cleared it. So I just replaced the O2 sensor (yes, the rear one, after the converter). I bought a Denso sensor from Rockauto.com, for $55 shipped. I may eventually replace the front one also, but haven't yet. No codes returned yet!