The “check engine” light is the last thing drivers want to see. The good news is that an illuminated check engine light doesn’t necessarily spell disaster for your car or your wallet. On the other hand, the fact that it can caused by any number of issues means that you won’t know what’s behind the check engine light until the problem is diagnosed and pinpointed by an automotive professional. Before you schedule a vehicle inspection in Brookhaven, read this brief article to learn about some of the common causes of a check engine light.
Faulty Oxygen Sensor
An oxygen sensor monitors the unburned oxygen from the exhaust. A faulty sensor can cause a decrease in gas mileage, and may eventually lead to a busted catalytic converter. Over time oxygen sensors get covered in oil ash, which reduces the sensors ability to change the oxygen and fuel mixture. A vehicle inspection and check engine light diagnostic in Brookhaven can determine whether a faulty oxygen sensor is the problem.
Faulty Mass Airflow Sensor
Another important sensor is the mass airflow sensor, which tells the car’s computer to add the proper amount of fuel based on the air coming through to the engine. A faulty mass airflow sensor can increase emissions, cause the car to stall, and decrease gas mileage. Most mass airflow sensor problems are the result of improperly installed air filters. Replacing the mass airflow sensor is not terribly difficult to do on your own, but the process is quick enough you may want to let a mechanic handle the project to inspect for other issues that may be related to the faulty sensor.
Old Spark Plugs
Old spark plugs are another common cause of check engine lights. Spark plugs seal the combustion chamber and provide a gap for a spark to jump across and initiate combustion in your engine. When plugs begin to fail, the spark plugs can misfire, causing fuel economy and vehicle performance issues.