What should I do if the Cruze engine fault light is on?

There are probably the following reasons for the light of Cruze engine failure: 1, the exhaust system failure of vehicle engine, most of which is caused by carbon deposition. It is suggested to clean the carbon deposit in the throttle and air intake, clean the three-way catalytic converter, and then decode it with a computer to see if there is any fault in the oxygen sensor. If it is faulty, it needs to be replaced. 2. This fault is caused by the damage of the sensor related to the vehicle engine. The key inspection is the intake and exhaust camshaft adjustment solenoid valves. This phenomenon is caused by the air leakage of the vehicle engine. This needs to focus on the vacuum solenoid valve of waste gas valve and intake branch pipe! The above aspects are the reasons that lead to the lighting of the vehicle engine fault light, so it is recommended to focus on the inspection.