Check Engine Symbol on Car: What It Means and What to Do
What Does the Check Engine Symbol Mean?
The check engine symbol, also known as the malfunction indicator lamp (MIL), is a warning light that appears on the dashboard of your car when the engine control module (ECM) detects a problem with the engine or emission control system. The symbol is typically a yellow or orange engine-shaped icon with the words “Check Engine” or “Service Engine Soon” written below it.
When the check engine symbol appears, it means that the ECM has stored a diagnostic trouble code (DTC) in its memory. DTCs are codes that identify the specific problem that has been detected. You can retrieve DTCs using an OBD-II scanner, which is a device that plugs into the OBD-II port on your car.
What Causes the Check Engine Symbol to Come On?
There are many different things that can cause the check engine symbol to come on, including:
- Loose or damaged gas cap
- Faulty oxygen sensor
- Spark plug problems
- Catalytic converter problems
- EVAP system problems
- Engine misfires
- Transmission problems
- ABS problems
- Airbag problems
What Should I Do When the Check Engine Symbol Comes On?
If the check engine symbol comes on, the first thing you should do is check the gas cap. If the gas cap is loose or damaged, it can cause the check engine symbol to come on and it is a simple fix. If the gas cap is not the problem, then you will need to have the car diagnosed by a mechanic.
When you take your car to a mechanic, they will use an OBD-II scanner to retrieve the DTCs that have been stored in the ECM. The mechanic will then be able to use the DTCs to diagnose the problem and recommend the necessary repairs.
Can I Drive with the Check Engine Symbol On?
In most cases, it is safe to drive with the check engine symbol on, but it is important to have the problem diagnosed and repaired as soon as possible. Driving with the check engine symbol on for an extended period of time can damage the engine and other components of the car.
Conclusion
The check engine symbol is a warning light that should not be ignored. If the check engine symbol comes on, it is important to have the car diagnosed by a mechanic as soon as possible. Driving with the check engine symbol on for an extended period of time can damage the engine and other components of the car.
