Oxygen sensor failure

Hello, how about friends I hope you can help me, I have a Pontiac G3 2007 and sends me several failure to the board already corrected to the guna the one that persists is that of the oxygen sensor that comes out in the scanner and cmbiel the sensor of the camshaft and the same oxygen sensor and the fault that I can do a thousand thanks for the help is not erased.

If you find the sensor, check the cables, it may be that you have any broken or burned

First of all, Czech that does not escape any injector, but for mine, it is the catalyst. Greetings.

You have to see if you have a dough

Hello:

how is a modern car your computer is OBDII so try to read with an online scanner that delivers the oxygen sensor, you can see if there are one or two sensors.

Modern vehicles have oxygen sensor at the catalyst entrance and the catalyst output.
Yes friend, I can have two good and one bad.

The computer sends fixed voltage to the sensor to respond on the mixture status, also modern probes use interno heater with voltage that comes from the computer or battery.

You must verify that voltages are present to make sure you don't have an open line or cable.

Search on the Internet of your oxygen sensor that you changed, brand number, model and you can see the electrical parameters and what kind is it.

Greetings