Check engine light is on. If I reset the light, it won’t come back on as long as the engine is running. When I shut it off and restart, the light comes back on immediately. Autozone’s reader gives two codes. Both are for oxygen sensor heater (one for sensor 1 and one for sensor 2). I replaced the cat and both sensors and still get this code. One person suggested that the problem lies in the computer itself. Thoughts?