What is the reason for BYD f3 engine fault light?

Cause of failure light of BYD f3 engine: 1. The throttle valve is too dirty, resulting in too rich mixture; 2. Excessive carbon deposition in the engine leads to unqualified exhaust emission; 3. Engine oxygen sensor failure.

BYD f3 fault light is a common fault. The fault light is all on because of ECU CAN bus fault, which should be due to poor contact of ECU CAN interface. The reason is that there is something wrong with the circuit. You can unplug the battery and try to reconnect it. If it can't be solved, it's time to go to the repair shop and diagnose with scanning tools.

When checking a new car, you must pay more attention to the following indicators: engine failure, air bag, water temperature, ABS, seat belt, car battery, car oil, oil quantity, door not tightly closed, brake disc, hand brake, turn signal, high beam, broken glass water, fog light, width indicator light, etc.

With the continuous development of science and technology, there will be more and more indicator lights on the dashboard of automobiles. Therefore, when you get a new car and are ready to drive alone, you must study the meaning of various indicator lights to avoid discovering various problems in time.

Exhaust problem: Exhaust failure can also cause the engine fault light to light up. After-oxygen sensor, three-way catalyst, exhaust camshaft and bearing failure are all causes of exhaust problems, among which three-way catalyst is the most common. The use of leaded gasoline, lubricating oil additives containing lead or silicon, three-way catalytic collision, engine oil supply system failure and so on are all easy to cause three-way catalytic failure.

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