How to eliminate err3 fault code of Li Cheng washing and sweeping car

Check the temperature sensor. When the err3 fault code of Li Cheng washing and sweeping vehicle is issued, it is necessary to check whether the temperature sensor is in poor contact. The washing and sweeping vehicle is a road sweeper in the road sweeper series. It has the functions of pavement cleaning, pavement cleaning, kerb and kerb elevation washing, low-pressure washing, spray dust removal and so on.