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A regular OBD 2 reader runs about $100-$150, but the smartphone bluetooth adapter is about $10. Ideally you could just borrow one or a hand from someone who knows how to use it. I know of one...

I had to replace both my O2 sensors, as I mentioned in a couple posts previously. However, before blindly replacing parts, any chance you have an OBD2 reader you can use? You can get Bluetooth ones...

On my 09 Aveo this issue was solved by replacing both Oxygen sensors, however it could only be one in your case. I was not getting errors for both o2 sensors.

I can't speak for the cam sensors, but the O2 sensors are very easy to swap out, just need a socket wrench and an O2 sensor socket.

Double-posting for an update.

Swapped out the rear oxygen sensor with a new one. I suspect the heating circuit in my original sensor was malfunctioning, and this seems to have solved the initial...

Thanks! I had swapped out the related 10A fuse already (though the old one looked fine), and I doubt the Engine Main relay is faulty, given that I doubt the ECM and fuel injectors are having...

Anyone happen to have the wiring diagram for the oxygen sensors on an 09 Aveo? I swapped out the sensor itself and it didn't solve the problem, so maybe there's a malfunctioning relay, but I'm not...

Similar steps to what I took. Replaced spark plugs, ignition coil, cleaned the throttle body, replaced the fuel pump, nothing fixed. Currently in testing after finding a loose connection with...

The last code I had was P0137, the Bank 1 Sensor 2, but I have had P0506 and P0507 (Idle Air control system RPM Low/High) errors before. From what I've read though, codes like P0137 can be caused by...

I've got the same problem with an '09 Sedan LT, though I can get codes off my OBD2 reader, have you tried to do anything to fix it? So far I've replaced the spark plugs, cleaned the throttle body,...