Does the front O2 sensor and the MAF sensor share the same power source? The reason is that I am getting the P0101 and P0135 even after replacing both sensors. The MAF must be losing power or the PCM is not seeing the output because when I am driving at highway speed (70-80) the car will "cough" and the SES light comes on with the P0101 code. But this doesn't happen all the time, and this morning the front O2 started setting a code. I am wondering if they share power. I thought that maybe I have a short in that power wire causing these problems.