bamcda2874
New member
I have a 2000 SR5 with 170K miles. I recently moved from CA to GA and when I did, my engine light came on. If I remember right it threw a P0431 code saying a problem was in the 02 sensors. I replaced them with Bosch ones from Autozone but the engine light is still on and MPG sucks. Should I just replace the sensors (both upstream and down) with Denso? Also, can the ECM be re-flashed in order to "tell" the ECM it's not in CA anymore?
