Engine Warning Symbol in Car
The engine warning symbol, also known as the check engine light, is a dashboard light that illuminates when the engine control module (ECM) detects a problem with the engine or emissions system. The symbol is typically an orange or red light with the silhouette of an engine. When the engine warning symbol is illuminated, it is important to have the vehicle diagnosed by a mechanic as soon as possible.
Causes of the Engine Warning Symbol
There are many different causes of the engine warning symbol. Some of the most common causes include:
- Faulty oxygen sensor
- Faulty spark plugs or ignition coils
- Faulty catalytic converter
- Faulty mass air flow sensor
- Faulty exhaust gas recirculation (EGR) valve
- Engine misfire
- Transmission problems
- Electrical problems
Symptoms of the Engine Warning Symbol
When the engine warning symbol is illuminated, it is important to pay attention to any other symptoms that the vehicle is exhibiting. Some of the most common symptoms of a problem with the engine or emissions system include:
- Engine performance problems, such as decreased power or acceleration
- Fuel efficiency problems
- Engine noise or vibration
- Exhaust smoke
- Unusual odor from the exhaust
- Dashboard warning lights
What to Do When the Engine Warning Symbol Is Illuminated
If the engine warning symbol is illuminated, it is important to have the vehicle diagnosed by a mechanic as soon as possible. The mechanic will use a diagnostic tool to read the trouble codes from the ECM. The trouble codes will help the mechanic to identify the cause of the problem. Once the cause of the problem has been identified, the mechanic will repair the problem and reset the ECM.
Ignoring the Engine Warning Symbol
It is important to never ignore the engine warning symbol. Ignoring the engine warning symbol can lead to serious engine damage. If you ignore the engine warning symbol, you may also void your vehicle’s warranty.
Conclusion
The engine warning symbol is an important indicator that there is a problem with your vehicle’s engine or emissions system. If the engine warning symbol is illuminated, it is important to have the vehicle diagnosed by a mechanic as soon as possible. Ignoring the engine warning symbol can lead to serious engine damage.
