A number of things can run through the mind of a car owner when the check engine light comes on. However, sometimes the cause of the problem isn't as severe as it may seem, but it can become worse with time. The best thing to do when a check engine light is on is to take the vehicle to a mechanic for a prompt diagnosis and repair. You don't want the problem to continue getting worse and become costly to repair, especially if you have a luxury vehicle like a BMW that might need special parts for proper bmw repair. The information in this article provides general information about the common causes of a check engine light coming on.

Gas Vapors Are Escaping from Your Car

If gas vapors are escaping from your vehicle, it can be causing the check engine light to come on. The reason why such a problem occurs is because there's something wrong with the cap to the fuel tank. If the gas cap is missing, it is important for it to be replaced as soon as possible. The caps are usually very affordable and can be found at most stores that sell auto parts. A cap that is still attached to the vehicle might simply be loose and need to be tightened up.

There is a Leak Causing Engine Problems

If you have noticed that your driveway is left with fluid on it after your car is parked for a while, it means that there is a leak. No matter which fluid is leaking from the car, the problem has likely caused the check engine light to come on. For example, if oil is leaking out of your vehicle, it might be causing the engine parts to rub together and heat up. A leak that consists of water or antifreeze can also harm the engine by causing it to overheat. Leaks should be repaired in a prompt manner to prevent your car from becoming a fire hazard.

The Mass Airflow Sensor Doesn't Work Properly

The mass airflow sensor is an important part in your vehicle. Basically, the sensor is needed to communicate with the car engine in regards to fuel. Your car engine receives fuel in an amount that is based on how much of it the sensor tells the computer to send through the lines. Getting the sensor replaced should lead to the check engine light going off if it is the root of the problem. Keep in mind that a damaged sensor might also mean that you need to get the air filter in your car replaced.