Where is O2 sensor on 2004 Chevy Aveo?

The oxygen sensor (O2 sensor) location on a 2004 Chevy Aveo depends slightly on the engine type (1.6L or 1.4L). However, it's generally located in the exhaust manifold or very close to it, downstream from the catalytic converter.

You'll likely find it:

* Underneath the vehicle: This is the most common location. You'll need to get underneath the car to see it.

* Near the catalytic converter: The O2 sensor monitors the exhaust after the catalytic converter. Look for a wire leading from a sensor into the exhaust system.

To be certain:

1. Consult your vehicle's repair manual: This will give you the precise location with diagrams. A Haynes or Chilton manual is readily available online or at auto parts stores.

2. Use an online parts diagram: Many websites like AutoZone or Advance Auto Parts have online parts diagrams for your specific year and engine. You can search by your VIN number for the most accurate results. These diagrams often show the O2 sensor location.

Remember to be careful when working under your car, use jack stands for safety, and disconnect the negative battery terminal before working near any electrical components.