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Knock Sensor - 2002 Kia Rio

I am getting a knock sensor fault on my 2002 Kia Rio and was looking for some guidance. Is replacing this sensor a relatively simple task, would I need any special tools? I would like to save the money of taking it to a shop but need some information. Is the knock senor located on the back of the engine on my vehicle? Any help would be much appreicated. Thanks in advance.

Who says the knock sensor is faulty? A trouble code does NOT say that. Here is location, removal, testing, installation of the knock sensor:

Thanks for your help

Today, it’s 19 days later. And…?