What Causes Your BMW Service Engine Soon Light To Come On in Phoenix? Now modern cars have numerous warning lights to alert the driver when something is not functioning efficiently while driving on the road. Among the several warning lights of the BMW, the service engine soon light is the most important one that can alert the drivers about the sensors that have some sort of problems. When the engine control module has identified any problem within the emission control system and the engine, then the service engine soon light comes on in the dashboard of your BMW. Additionally, the engine soon light also indicates minor problems related to the other electrical systems. Moreover, determining the real causes behind the activated service engine soon light is very easy. The following points define the causes behind the triggered service engine soon light in your BMW.
Malfunctioned oxygen sensor Thus, the main role of the oxygen sensor in your car is to measure the amount of oxygen available within the exhaust gases and sends the data to the ECU about the unburnt oxygen in the exhaust system to determine the right amount of air-to-fuel mixture for the smooth combustion process. If the oxygen sensor of the BMW is failed, then your engine is running abnormally because too little amount of oxygen in the combustion chamber is harming the engine functions. On the other hand, too much oxygen in the combustion chamber can cause poor engine performance and engine damage. As a result, the service engine soon lights activated on the dashboard.
Failed catalytic converter Generally, the catalytic converter is located in the front of the exhaust system in your car which can reduce the pollutants which are released from the exhaust pipe. Thus, the main function of the catalytic converter in your car is to detoxify the harmful chemicals means it can convert the harmful pollutants to less harmful gases before releasing them into the environment. Among the several components of the exhaust system, it is built to last for longer. But, due to frequent driving, it can wear out in your car that can affect the engine performance, increase the engine temperature and activate the service engine soon light on the dashboard.
Damaged mass airflow sensor