In this video I explain how and wear O2 sensors are located on most vehicles. The locations of O2 sensors are usually classified using an acronym such as B1S1, B1S2, B2S1 and B2S2. These acronyms, (if you can call them that) are usually found at the end of diagnostic trouble codes pertaining to O2 sensor faults and they serve as coordinates for the O2 sensors. The B in the acronym means "Bank" and the number just after it denotes which side of the engine that the O2 sensor can be found. The S in the acronym means "sensor" and the number just after denotes whether the sensor is upstream or down stream. The upstream or sensor 1 would be before the catalytic converter and the down stream sensor 2 would be either on or just after the catalytic converter. Once I establish these facts I then put them together and give a few real life examples of how to locate and classify O2 sensors relative to the bank and sensor number.
Note: As mentioned in the video, there are exceptions to most things in the automotive world. But, in my experience this information will fit most vehicles out there today equipped with O2 sensors. However, it is extremely important that you perform your own research pertaining to whatever vehicle you are working on.
Note: Some older vehicles with V type engines may only have 1 upstream O2 sensor and 1 down stream O2 sensor. In this case they would be B1S1 and B1S2 and those would be the only O2 sensors present on the vehicle.
Note: Just because you have a diagnostic trouble code related to an O2 sensor this does not necessarily mean that your O2 sensor is bad. There are many things other than a faulty O2 sensor that can cause an O2 sensor related code. Performing a proper diagnostic pin point test pertaining to whatever code you have helps prevent replacing parts that are not needed.
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Disclaimer:
Barbour's Auto Help is not responsible for any damage or personal injury incurred in the process of performing any auto repairs done by you the viewer. Automotive repair is extremely dangerous. Repair your vehicle at your own risk. It is the viewers responsibility to verify all information and procedures as outlined in YOUR REPAIR MANUAL AND OWNERS MANUAL FOR YOUR VEHICLE. Owning and using a repair manual suited for your vehicle is essential for correctly and safely performing ANY repair to your vehicle. Always wear safety glasses, protective gloves and heed all instructions for use applicable to any piece of equipment you may use. Due to circumstances out of the control of Barbour's Auto Help, Barbour's Auto Help makes no guarantee that by the use of the information given in this video a quality repair will be made. Barbour's Auto Help makes no guarantee that the information provided is totally complete, synchronized and accurate. Verify everything using an appropriate repair manual. Verify everything with your own research.
14 авг 2024
