Oxygen sensors are located in the vehicle’s exhaust system Depending on the make, model and engine type oxygen sensors can be found in a variety of places Most vehicles are equipped with two oxygen sensors
How to Replace O2 Oxygen Sensor Downstream 2006-2013 Chevrolet Impala
Oxygen (o2) sensors are located within a vehicle's exhaust system
Upstream sensors (sensor 1) are positioned in the exhaust manifold before the catalytic converter, while downstream.
The illustrations below show several of the most common mounting configurations for oxygen sensors, depending on engine type and alignments The terms used for each sensor location match the terms. A vehicle’s (bank 1, sensor 2) o2 sensor will be located behind or downstream of the catalytic converter on the bank which corresponds to the engine’s first cylinder. The upstream o2 sensor is found before the catalytic converter, while the downstream o2 sensor is located after the catalytic converter
The upstream o2 sensor helps identify the vehicle's fuel. Don’t guess your o2 sensor location This guide clarifies the difference between sensor 1, sensor 2, and bank 1/bank 2 placements across all engine types. Determine exactly where your oxygen sensors are
We detail placement by function, engine type, and practical physical location.
Locate your oxygen sensors easily Learn how to identify bank 1 vs bank 2 and upstream vs downstream positions to fix your check engine light today. Learn where to install your oxygen sensor for the best accuracy and durability Expert o2 sensor placement tips from ld performance usa.
