The engine control unit is the main computer chip in your car, truck, or utility vehicle. This chip keeps an eye on the system’s sensors to make sure everything is working properly. A sensor will report an error to the engine control unit if something goes wrong. To alert you of the problem, the unit will turn on a dashboard warning light, such as the check engine light. Let’s go over the components and systems that cause the engine control unit to engage the check engine light.
Assume, for the sake of argument, that your catalytic converter is clogged. Because the catalytic converter does not have its own light, the engine control unit will receive the error code and engage the check engine light.
EVAP Control System
The EVAP control system is no exception. If something goes wrong with it, you’ll get a check engine light. The EVAP control system is responsible for preventing gasoline or diesel fuel from evaporating from the engine.
Engine Control Unit
Surprisingly, if the engine control unit fails, the check engine light will turn on. Your engine may also die and refuse to restart, in addition to the dashboard warning. Unfortunately, the engine control unit will need to be replaced.
The gas cap is another thing that keeps your fuel from evaporating. This cap forms a seal over the gas tank, ensuring that no fuel vapor escapes into the environment. If the cap is old, it may no longer be able to form a seal.
Mass Airflow Sensor
Because it is located directly behind the air filter, the mass airflow sensor can become dirty. Your engine may struggle to start if the mass airflow sensor fails, and the check engine light will come on.
The oxygen sensor serves a unique purpose. It measures how much oxygen is in the vehicle’s exhaust rather than checking the air inflow. Check engine warnings are frequently caused by the O2 sensor. The O2 sensor has a 100,000-mile lifespan.
Finally, if the spark plugs are misfiring, the engine control unit is likely to turn on the check engine light. Wear and tear, as well as a problem with the engine control unit, can both cause the spark plugs to misfire.
Always seek the advice of a qualified auto mechanic at a local repair shop who has previously dealt with similar problems.
Check Engine Light Repair in San Diego
You will always require the services of a dependable mechanic if you are having any problems. It doesn’t matter how long you have owned your vehicle. For many years, Automobile Repair Shop San Diego has provided high-quality auto maintenance in San Diego. Call (619) 330-0862 right away to learn more about how we can help you with your San Diego auto repair. We’ll get you back on the road in a safe and timely manner without breaking the bank. If you have any problems with your vehicle, stop by our shop or schedule an appointment today.