02 sensor location

Hello,

Here is a guide to help walk you through the oxygen sensor replacement with the location of each sensor in the diagrams below.

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Check out the diagrams (Below). Please let us know what happens.

I had recently had my oxygen sensor changed. The check engine light comes on then a day later it goes off again. A few weeks go by then the same thing happens. Go the codes checked at Auto Zone and it showed P0137 Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2). Do i need to change it again or could there be another reason why this happens?

Is this the same O2 you previously replaced? I ask cause there are 4 on vehicle. If it is there maybe problem with circuit and will need proper diagnosis by a Tech.

L1 bank sensor running Lean ive changed the 02 sensor twice already and advice. Its blowing black carbon out the tail pipe and you can smell gas bad.

Typical of a misfiring cylinder. You smell the unburned fuel, but the O2 sensor detects the unburned oxygen, not fuel. Since it says there is too much unburned oxygen, the Engine Computer commands more fuel to all of the cylinders. After that there is STILL that unburned oxygen that is detected.

I'm trying to find out the name of the colors on my o2 sensor

You have four oxygen sensors. The left downstream sensor is different than the other three. The original wire colors are white, white, white, and black. A lot of aftermarket replacements use white, white, gray, and black.

The upstream sensor 1/1

How do I check circuit fuse and relay

Hi:
You can check a fuse by checking for continunity. As far as a relay, usually there are more than one in the relay block with the same part number. Make sure they are the same and switch them.