Problem with O2 sensor using defouler
Hi,
I have 08 siand I just made the installation of my vibrant w/hfc header with strup defouler yesterday. Everything goes right but today the check engine came out. I went to autozone and after put the car code reader, the problem was the O2 sensor. How can I have problem with this sensor if I am using a defouler? and what can I do??
thanks
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