What happened to the hacker's engine trouble light?

About "What happened when the hacker's engine trouble light came on?" Introduce the following related contents:

The reasons why the hacker engine fault light is on are as follows:

1, the exhaust emission is not up to standard, such as poor fuel, failure of three-way catalyst, excessive carbon deposition in intake pipe, blocked fuel nozzle, failure of oxygen sensor, occasional misfire of engine, etc. , engine fault lights will be on, and poor oil quality will lead to the most engine fault lights; Replace the three-way catalyst;

2. The fault light is on due to poor engine system, such as the fault of accelerator pedal sensor, throttle position sensor, air flow meter and crankshaft position sensor. Or poor line contact, etc. , it will cause the engine fault light to light up; There are many maintenance methods related to maintenance and replacement;

3. Some vehicle gearbox system failures are also indicated by engine failure lights, such as internal gearbox failures, slippage, high temperature, etc. Need to go to the repair shop for maintenance inspection.