A METHOD FOR ESTIMATING THE AGEING OF AN EXHAUST GAS SENSOR AND AN INDUSTRIAL VEHICLE FOR IMPLEMENTING THIS METHOD

A method for estimating the ageing of an exhaust gas sensor () placed in an exhaust line () of a diesel internal combustion engine () of an industrial vehicle () includes—acquiring (S) an initial value of an estimated remaining lifetime () of the exhaust gas sensor;—measuring (S) the time spent by the engine in each of several predefined engine operation modes during a predefined time period;—for each of the engine operation modes, calculating (S) a lifetime loss value depending on the time spent by the engine in said engine operation mode during the predefined time period and on a predefined ageing rate associated to said engine operation mode;—updating (S) the estimated remaining lifetime value by subtracting each calculated lifetime loss value from the initial value.