02 Oxygen SensorLSU 4.9 Sensor, 5 Wire WidebandBO02580170250258017025LSU "Broadband" Universal Sensor - as its name suggests the broadband oxygen sensor has the ability to not only indicate an air/fuel ratio of lambda = 1 but can measure as low as lambda = 0.7 up to infinity (infinity = atmosphere containing oxygen of ~ 21% by volume). This is a unique quality compared to the two step rich/lean function of a standard thimble or planar sensor. This LSU type sensor has not only been successfully applied to standard petrol engined passenger cars, but for lean-burn and gaseous fuelled engines. Due to their unique design these sensors are also used in diesel powered vehicles equipped with electronic diesel control (EDC) systems and industrial applications including gas powered furnaces, air/fuel ratio measuring equipment and engine/chassis dynamometers. Broadband oxygen sensors can only be used in conjunction with a control unit that is specially designedto support the operational function and precise heater element management required by an LSU broadband sensor. It is important to note that a specifically designed wiring harness connector containing 6 pins is used for LSU type sensors. Whilst the physical appearance of the oxygen sensor connector will vary according to customer and vehicle design requirements, all LSU sensors have a calibration resistor built into the connector housing. Each individual LSU sensor is calibrated at the conclusion of the manufacturing process by laser altering this resistor value. Therefore removal or exchange of the oxygen sensor connector will render the sensor inoperable.
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