Should i change my O2 sensor?

Asked by Jun 29, 2017 at 12:51 PM

Question type: Maintenance & Repair

My check engine light turn on. Went to 2 mechanic shops. Then, one say they scanned that O2 sensor fault. The other one scanned nothing and I'm not sure what they do to make it back to normal(Went few times and they did the same thing). Occurred many times.

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