Q: Where is the downstream O2 sensor located?

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I need to figure out where the downstream O2 sensor is located on a 2013 Chevy Sonic LT 1.4L Turbo.

My car has 43000 miles.
My car has an automatic transmission.

Hello, thanks for writing in about your 2013 Chevrolet Sonic. The downstream O2 sensor is always mounted after the catalytic converter or on the back side of it. If you’d like some help wit this, consider YourMechanic, as one of our mobile technicians can come replace the oxygen sensor at your home or office.

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