what is a lambda sensor
An oxygen sensor (or lambda sensor) is an electronic device that measures the proportion of oxygen (O 2) in the gas or liquid being analysed.It was developed by the Robert Bosch GmbH company during the late 1960s under the supervision of Dr. Guenter GÃ¼nter. baumanhe ECU is a control system that uses feedback from the sensor to adjust the fuel/air mixture. As in all control systems, the time constant of the sensor is important; the ability of the ECU to control the fuel-air-ratio depends upon the response time of the sensor.