thanks for the info that should help when I trace the wires. so there is only 1 fuse for both sensors?The 2nd o2 sensor is just under the rh intermediate axle in the rear of the cat. This is between where the axle goes into the tranny and the intermediate axle bearing. The axle is VERY close to the o2 sensor. Mine had hit the axle and the wires were pinched only slightly but enough to blow the fuse and throw the code. You'll see what I mean when you find it. And BTW, both sensors are the same part number, you just need to be sure to get the one with correct length wires.