How often does KIA Freddy's oxygen sensor change? Freddy oxygen sensor location and replacement tutorial.

20 19 Freddy generally has two oxygen sensors, namely pre-oxygen and post-oxygen. The former oxygen is in front of the three-way catalytic converter, and the latter oxygen is behind the three-way catalytic converter. As shown in the figure below.

1 wiper water

2 storage battery

3 Throttle

4 oxygen sensor

5 Brake tank

6 fuse box

7 Air cleaner element

8 Coolant tank

The working environment of oxygen sensor is very bad, so it needs to be replaced after driving 65438+ 10,000 kilometers. Whether the oxygen sensor needs to be replaced or not, the easiest way is to check its tip. If the tip of the sensor is found to be black (mainly carbon deposit), the oxygen sensor should be cleaned in time, and then 5- 10% ferric chloride solution and excessive hydrochloric acid should be prepared. But if it is white or brown, it means that the oxygen sensor is poisoned. At this time, cleaning will not help, and the oxygen sensor should be replaced as soon as possible.

The following is the replacement tutorial of Freddy oxygen sensor.

1, first determine the position of the oxygen sensor;

2. Remove the protective cover of the oxygen sensor plug and disconnect the oxygen sensor connector;

3. Unscrew the oxygen sensor to be replaced directly with a wrench;

4, restore the installation and tighten it in turn before connecting;

5. Connect the computer, troubleshoot the fault code, read the engine data stream, and check whether the values are normal.