There is no problem with the oxygen sensor detection of Jiangnan tt, but the fuel consumption is high.

Hello, car owner, according to your description, it should be caused by the frequent running of vehicles in urban areas, unclean engine throttle or carbon deposition at the air intake. I suggest you go to the repair shop to clean up the carbon deposit on the throttle and air intake, and the problem should be solved. I hope my answer can help you. You can continue to consult if you have any questions. Wish you a happy life and a happy family!