P0133 code which sensor do I replace?

Question

I just replaced both O2 sensors upstream and downstream.  Still getting P0133. Is there another sensor? If so where is it? Thanks.

Answer 1

HI there,

These are the only sensors, however there may be a power issue to the front sensor. In the fuse box under the hood there is a fuse for the front sensor. OXY sensor fuse. If the fuse is good, then it's possible there is a wiring issue, either a broken wire or short to power.