Last week I was driving and my check engine light came on with two codes P0138 and P0158 for the left and right bank rear O2 sensors. It says "O2 sensor circuit high voltage"
I also checked the voltage that they are each putting out and the two that have the code say 1.3v

I put new Bosch O2 sensors in about two months ago and this is the first problems that I've had with them. I figured that maybe they were defective so I replaced them and I'm still getting the same code. Does anyone know what I could be missing? Thanks

 

You might have a leak in your vacuum hoses, or its time for you to change the catalytic converters