Unlock Engine Potential Bank 1 Sensor 2 Diagnostic Guide

... sensor bank on the engine block, as shown below: Sensor 1 will usually be in the upstream position and Sensor 2 the downstream. The illustration below shows ... 4 cyl engines only have a single bank, v based engines have two. Sensor 1 is primary, sensor 2 is post cat. Take it to a local auto parts store and have the code scanned again (for free). The I6 only has 1 bank. Sensor 1 would be the front and sensor 2 would be the ... What are Bank 1, Bank 2, etc.? Since this question pops up from time-to-time, here's an easy to follow diagram that illustrates what they ... There are four oxygen sensors. Bank 1 is the driver's side and Bank 2 is the passenger's side. Each Bank has a Sensor 1 which screws into a bung on the exhaust ... It has four sensors, Bank 1 is in the exhaust manifold before the turbo inlet and is buried, sensor 2 (on cars which have one, the CUWA does) is ... It is the O2 after the cat. With the monte there is only 1 bank. Sensor 1 will be closest to the motor. Sensor 2 second out. Bank 1 is the passenger side, Bank 2 is the driver side, Sensor 1 is it he highest in elevation (the upstream sensor), Sensor 2 is the lower in elevation (the ... Here's what you need to do if your engine is showing error code P0138, which is triggered when the engine control module detects a high ... Sensor 2 is always after the catalytic converter. Sensor 1 measures exhaust before the cat, and Sensor 2 measures the exhaust after it to make sure the ...