Oxygen or lambda sensor is used to monitor the amount of oxygen in engine exhaust mixture which be controlled by engine computer, the sensor is designed to operate at temperature of about 250c, during engine operation the sensor exposed to carbon compounds which caused it to decrease in performance over time and therefore, after about 120,000 km there are
already signs of soot even though the sensor still works.
Yossi Schneider
14 фев 2019
