Mazda 3 P0161: Heated O2 Sensor – Performance | Bank 2 Sensor 2
P0161 is a very common OBDII code that occurs in the Mazda 3. It is typically caused by a failure in one of the elements that heat the oxygen sensors, specifically bank 2 sensor 2. Replacing the Oxygen sensor will fix the problem a majority of the time. Some of the other causes of P0161 … Read more