Step 2: Place wheel chocks around the rear tires. Note: This is only for vehicles with all wheel drive transmissions or rear wheel drive transmissions.Make sure that the transmission is in park (for automatics) or in 1st gear (for manuals). Step 1: Park your vehicle on a flat, hard surface. Having all of the necessary tools and materials prior to starting the work will allow you to get the job done more efficiently. Part 2 of 7: Preparing to replace the air fuel ratio sensor

If you have scanned the vehicleвЂ™s computer and found different codes than mentioned, perform diagnostics and troubleshooting before replacing an air fuel ratio sensor. For the codes P0131 and P0132 the air fuel ratio sensor has either a failed heater or there has been catastrophic failure due to thermal shock. The codes P0030 through P0064 will display that the air fuel ratio sensor heater has shorted or is open. The following are codes associated with the air fuel ratio sensor: Different codes may come on during the scan process letting you know that something within the engine caused the air fuel ratio sensor to fail. When an engine light comes on, the first thing to do is scan the vehicle's computer for codes. Part 1 of 7: Identifying the malfunction indicator light

The indicator light that is associated with an air fuel ratio sensor will illuminate with an amber color. Usually an engine light will come on letting the operator know that something is not functioning properly. When this sensor fails the engine will not perform optimally and can pollute the environment. Air fuel ratio sensors, commonly known as a oxygen sensors, tend to fail within the driveability system of vehicles.

How to install aem air fuel ratio gauge