What Causes the Engine Fault Light to Frequently Illuminate?

[DiEliza]

Engine frequently illuminating the fault light for the following reasons: 1. Sensor issues. Mainly include water temperature, crankshaft position, air flow, intake temperature, oxygen sensors, etc. When these sensors are damaged, have poor contact, or signal interruption, the car's ECU cannot accurately obtain engine data, which will cause the engine fault light to illuminate. 2. Maintenance issues. Poor engine maintenance is the most common cause of the engine fault light illuminating. Vehicles have a certain maintenance cycle. If the owner does not perform maintenance on schedule, coupled with poor driving habits, it will increase the burden on the engine operation, and ultimately, the fault light will remind the need for maintenance.