2000 Buick Century 6 cyl Front Wheel Drive Automatic 154000 miles
service engine soon light came on. Replaced O2 sensor.
light went off. Light has come back on. O2 sensor was
replaced because of trouble code reading. What do I need to do to turn off service engine soon light?
Hi: If the light is on, you need to have the computer scanned again to see if the O2 sensor was the only problem. Most nationally recognized auto parts stores can scan them for free. Also, after they check it, ask them to reset the light with their scanner.