Having problems with your 2000 Saturn SL ?
The check engine light is on. The 02 Sensor doesn't work. Could the faulty sensor be the reason why my check engine light is on??
Yes if the O2 sensor is faulty it will turn the check engine light on. Most local auto parts stores have a scan tool that you can use to retrieve the codes from the engine. I would recommend getting the codes to make sure there are no additional issues to prevent the light from turning off.
Repair Help & Product Troubleshooting for 2000 Saturn SL
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