Bank 1, Bank 2 In the automotive world, Bank 1 refers to the number one cylinder bank, which means it is the bank where the number one cylinder is located. Sensor 1, Sensor 2 As far as oxygen sensor location goes, things are quite simple: Sensor 1 is the upstream oxygen sensor. March 10, 4 min. Bank 1, Sensor 1? Upstream or Downstream? March 10, 3 min. Brake Rotor Thickness. If one of these O2 sensors has stopped working, you need first to find which one it is, locate it and then get it replaced or fixed.
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. People get confused about how to tell which is bank 1 and bank 2. Below are the three methods of knowing bank 1 and bank 2.
Sometimes, a mark or letter is stamped on the cylinder block, or the head indicates the cylinder bank number.
You can use an OBD 2 scanner tool to know the right bank number. First of all, make sure that you do not have trouble code, if do, then erase all the code. Unplug any of the oxygen sensors on any bank.
Now, a trouble code appears, It will show you the oxygen sensor with bank number. Bank 1 sensor 1 is the front oxygen sensor on bank 1. The bank 1 sensor 1 oxygen sensor is used to monitor the oxygen concentration in the exhaust gases.
It produces voltage and sends to the car ECU, which increases or decreases the air-fuel ratio. Bank 1 sensor 1 is located before the catalytic converter. A four-cylinder or inline six-cylinder engine has one bank, so it is located before the catalytic converter, near the engine under the hood. If the car has a V6 or V8 engine, then bank 1 sensor 1 is located before the catalytic converter at the engine side with cylinders 1, 3, 5, 7, etc.
Bank 1 sensor 1 is an upstream oxygen sensor. It is also called Pre Cat Sensor. It is the sensor located before the catalytic converter on bank 1. Bank 1 sensor 2 is the rear oxygen sensor on bank 1. Bank 1 Sensor 2 oxygen sensor is used to monitor the efficiency of the catalytic converter in the exhaust gases. O2 sensor Bank 1 Sensor 2 is located after the catalytic converter on bank 1. A four or six-cylinder inline engine has only one bank so the O 2 sensor bank 1 sensor 2 is the rear sensor located after the catalytic converter.
You are not alone! One of these things is if you get a trouble code saying bank 1 or bank 2, sensor 1 or sensor 2 in the last sentence of the trouble code data. But, It is actually not that difficult! Bank 1 and bank 2 simply refer to either side of the engine.
Bank 1 is on the side with cylinder 1. Bank 2 is the side with cylinder 2. Most commonly Bank 1 is towards the front of the car if it has a transverse engine.
You can also try to find any stamps on the cylinder block or head for any cylinder numbers. The front of the engine is the part where the crankshaft pulley is. The side nearest the front is not the front of the engine. The sensor number tells us where on the exhaust system, the O2 sensor or the Exhaust temperature sensor is installed. The 1st sensor is located closest to the engine, and the last is located towards the rear of the exhaust system. Some diesel engines have many exhaust temperature sensors, and they can use sensors 1 — 2 — 3 — 4, etc.
Bank 1 Sensor 1 is the first sensor closest to the engine. On Bank 1 means it is at the engine side with cylinders 1, 3, 5, 7, etc. Bank 2 Sensor 1 is the first sensor closest to the engine. On Bank 2 means it is at the engine side with cylinders 2, 4, 6, 8, etc. Ask any car question in our new community!
Magnus is the owner and main author of MechanicBase. He has been working as a mechanic for over 10 years, and the majority of them specialized in advanced diagnostics and troubleshooting. Certified Automotive Diagnostic Technician.
Bank 1 does have cylinder 1 in it.
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