What Causes the Engine Indicator Light on the Dashboard to Illuminate?

[Isabela]

Specific reasons for the engine indicator light on the dashboard to illuminate are as follows: 1. Sensor issues: Sensors include those for coolant temperature, crankshaft position, air flow, intake air temperature, oxygen levels, etc. When these sensors are damaged, have poor contact, or experience signal interruption, the car's ECU cannot accurately obtain engine data, which will cause the engine fault light to illuminate. 2. Oil quality issues: Oil quality includes fuel and engine oil. The fuel added to the car has a specific grade, and engine oil can be semi-synthetic or fully synthetic. If the owner does not add them as required, prolonged use can cause engine wear, leading to the fault light illuminating.