Where is o2 sensor located

Most late model engines have multiple oxygen sensors, so which one is sensor 1, 2 or 3, and how do you know which cylinder bank is 1 or 2? On straight four and six cylinder engines, there is only one bank of cylinders. So all of the oxygen sensors will be bank 1. The O2 sensor located in or behind the catalytic converter will be Sensor 2. On Ford V6 and V8 engines, for example, cylinder number one is typically the RIGHT front cylinder on the passenger side in a rear-wheel drive car or truck.

How often the oxygen sensor needs to be replaced will be determined by the age of your vehicle and the type of sensor you have. Newer vehicles, those less than 20 years old, will probably need to have the sensor replaced about every , miles. Vehicles older than the mids will require replacement at 50, to 70, miles. Oxygen sensors are fairly easy to diagnose and replace. Typically, you cannot repair a faulty O2 sensor.

It must be replaced because of the technology and materials in its housing. You may also damage the sensitive technology. Some people do choose to replace the sensor themselves, but you do need a special socket to do so. The check engine light is telling you your car has a fever. It might be something minor, such as a loose gas cap.

It could also mean a faulty catalytic converter or wires that have been damaged. In some cars, a change in humidity can cause the check engine light to come on. Knowing why the check engine light is on can give you peace of mind, especially after making the necessary repairs. Sun Devil Auto has 19 locations in the Phoenix Area that provide diagnosis, service, and repairs for all makes and models. Find the store closest to you , make an appointment and let us help you keep your car in peak performance.

Enter your email address and we'll email you a digital version of this coupon that you can present on your mobile device at your Sun Devil Auto Shop. In this article, we will be discussing two different methods that are mostly used to locate O2 sensors.

O2 sensors are first divided into two categories; bank 1 and bank 2. Due to this, a lot of people have trouble locating which O2 sensor is bank 1 and which O2 sensor is bank 2 and in confusion, they sometimes even end up replacing the wrong sensors which cost them both money and time.

We will be clarifying each one in detail so that you have no trouble using either of the two methods to locate the right sensors successfully.

We will explain in detail bank 1 and bank 2 sensors and also sensor 1 and sensor 2 so that from next time onward you are able to locate and then replace the right sensors. The cylinders in the engine are mostly divided into two parts.

If the engine in your car is V-engine, then it will have one bank on each of the two sides of the engine. The right way to tell which side is Bank 1 and which side is Bank 2 by using the following method:. Bank 1: It is the side which has the 1 cylinder.

For instance, Cylinders 1 — 3 — 5 — 7. Bank 2: It is the side which has the 2 cylinder. For instance, Cylinders 2 — 4 — 6 — 8. There are two types of Engines, inline engines and transverse engines engines that are mounted in other directions.

Now the next problem that arises is how to be able to tell the number of a cylinder. In order to be able to do that, this is what you got to know first. Some of these different ways are mentioned below:. The number will be stamped on the crankcase. In some cases, they got the numbers written on them. So they might not be in the right positions. The dealer might have some information about that as well. The sensor number is supposed to tell us where the O2 sensor or the Exhaust temperature sensor is located or mounted on the exhaust system.