How to solve the fault light of Buick LaCrosse engine

Because the vehicle exhaust gas is not up to standard, the fault indicator light is on. Replace the three-way catalyst. The solution of the Buick engine fault indicator light is as follows: 1, and the exhaust emission is not up to standard. For example, poor fuel, three-way catalyst failure, excessive carbon deposition in the intake pipe, clogged fuel nozzle, oxygen sensor failure, and occasional engine fire will all lead to the engine fault indicator light. Among them, when the oil quality is poor, the engine fault light is on at most. Replace the three-way catalyst; 2, according to the accelerator pedal sensor, throttle position sensor, air flow meter, crankshaft position sensor and other faults or poor line contact caused by the engine system fault light lighting related maintenance methods; 3. Some vehicle gearbox system faults are also indicated by the engine fault indicator light. Such as transmission internal fault, slip, high temperature, etc. You need to go to the garage for repair and inspection, which affects the failure of the vehicle transmission. Detect transmission failure and check it immediately.