Car Check Engine Light Symbols
What is the Check Engine Light?
The check engine light is a warning light that illuminates on the dashboard of a vehicle to indicate a problem with the engine or emissions control system. When the light is illuminated, it means that the engine’s computer has detected a malfunction and has stored a diagnostic trouble code (DTC) in its memory.
Types of Check Engine Light Symbols
There are many different types of check engine light symbols, each of which indicates a specific problem. Some of the most common symbols include:
- Service Engine Soon: This symbol is a general warning light that indicates that the engine needs to be serviced. It can be caused by a variety of problems, including a loose gas cap, a faulty oxygen sensor, or a problem with the emissions control system.
- Check Engine: This symbol is a more serious warning light that indicates that the engine has detected a malfunction that could damage the engine or the emissions control system. It should be addressed as soon as possible.
- Malfunction Indicator Lamp (MIL): This symbol is similar to the Check Engine light, but it is used on vehicles that are equipped with an onboard diagnostics (OBD) system. The MIL will illuminate when the OBD system detects a malfunction that could affect the emissions control system.
What to Do When the Check Engine Light Comes On
If the check engine light comes on, it is important to have the vehicle diagnosed as soon as possible. The longer you wait to address the problem, the more likely it is that the problem will become more serious and expensive to repair.
When you take your vehicle to be diagnosed, the mechanic will use a scan tool to retrieve the DTCs that are stored in the engine’s computer. The DTCs will provide the mechanic with information about the nature of the problem and will help them to determine the best course of action.
How to Reset the Check Engine Light
Once the problem has been repaired, the check engine light can be reset. This can be done by disconnecting the negative battery terminal for a few minutes and then reconnecting it. However, it is important to note that resetting the check engine light will not fix the underlying problem. If the problem is not addressed, the check engine light will come back on.
Conclusion
The check engine light is an important warning light that should not be ignored. If the light comes on, it is important to have the vehicle diagnosed as soon as possible. The longer you wait to address the problem, the more likely it is that the problem will become more serious and expensive to repair.
