![]() Where is Bank 1 sensor 1 on a Toyota?Īs with any other vehicle, this depends on the engine type and drivetrain configuration. Despite their differences in capacity and number of cylinders, they all have a bank 1 sensor 1 on the passenger side. Also, all newer F-150 models have V-shaped engines. Where is the Bank 1 Sensor on a Ford F150?īeing a classic truck with a rear-wheel-drive configuration, F-150 has a longitudinally-mounted engine. When installing a new one, add some anti-seize to the threads and tighten it to the specified torque. As a preparation step, disconnect the wire plug and spray some penetrating oil onto sensor threads. However, access can be tricky in most cars because of limited space, so you will need a special O2 sensor socket. How to change O2 sensor Bank 1 Sensor 1?Īfter locating it in your car, replacing the sensor is just a matter of undoing several bolts or unscrewing the sensor itself. It is easy to spot in-line engines, while it is important to find out which is the bank 1 side on V-shaped engines. You will find it on the exhaust side, closest to the bank 1 cylinder head. ![]() On all cars, bank 1 sensor 1 is an upstream oxygen sensor. This important data helps ECU adjusts the air-fuel mixture for optimum efficiency. The task of this sensor is to measure the composition of raw exhaust fumes. These oxygen or O2 sensors are located between the bank 1 cylinder head and the corresponding catalytic converter. On V-shaped engines, it is necessary to determine which is bank 1. This will be the only upstream sensor on in-line engines. Regardless of the make and model, bank 1 sensor 1 is located between the engine and catalytic converter. Bank 1 refers to the side of the engine where the #1 cylinder is located. Look under the spark plug firing order section. The best way to determine which side is Bank 1 or Bank 2 is to look it up in your owner’s manual. The truth is that Bank 1 sensor 1 can be on either side of the engine. Many car manufacturers assign the passenger side of the engine as Bank 1 and the driver side as Bank 2, which is often the case in most European vehicles. On a six, eight, ten, or twelve-cylinder engine, it gets tricky to determine which one is Bank 1 sensor 1 because those cars typically have two upstream sensors. On a four-cylinder engine, it is straightforward to locate the O2 sensor 1 bank 1. We often get asked: “Where is Bank 1 Sensor 1?” To answer that question, we decided to show you a few pictures of Bank 1 Sensor 1 to help you identify it on your car.
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