If your BMW’s check engine light is flashing, pull over and stop driving your automobile. A flashing check engine light is an indication of serious problems in the engine most likely in the evaporation control system. A steady check engine warning can be caused by many different things. East Coast EuroWerks is going to list the common reasons why your BMW’s check engine light turned on below.
Clogged Catalytic Converter
Over time, the catalytic converter can get clogged by carbon deposits. When this happens, your check engine light will turn on and you may smell rotten eggs. If the catalytic converter fails, this, too, will turn on the check engine light.
Engine Control Module Failure
The engine control module or ECM is your BMW’s main computer chip. If it fails, your check engine light will turn on and your BMW’s engine may turn off. Unfortunately, you won’t be able to get your BMWs started until you replace the faulty engine control module.
Fuel System Problems
Fuel system problems can also cause the check engine light to turn on. The least concerning of these problems is a loose gas cap. You may also end up with the check engine warning if your fuel pump is dying or your fuel injectors are clogged.
Malfunctioning MAF Sensor
MAF stands for mass airflow, and this sensor is responsible for tracking the air that flows into your BMW’s engine. This sensor can malfunction or get dirty. When either happens, you end up with the check engine warning.
Malfunctioning O2 Sensor
O2 stands for oxygen, and the oxygen sensor keeps track of the oxygen levels in your BMW’s exhaust. One of the most common reasons why a check engine light turns on is due to a malfunctioning O2 sensor. Oxygen sensors generally last between 60,000 and 90,000 miles.
Transmission Problems
You may also end up with the check engine warning if your BMW is having transmission problems. Aside from the check engine light, your BMW may struggle to shift through the gear cycle, grind gears, or refuse to go into gear.
Worn Spark Plugs/Wires
Finally, worn spark plugs or plug wires can also cause the check engine light to turn on. Aside from the check engine warning, you will also notice that your BMW’s engine is misfiring. This is particularly noticeable when you are driving at higher speeds and when you are sitting at an idle.
Call East Coast EuroWerks in Wilmington, NC, today if your BMW or other European automobile’s check engine light has turned on. We can find and fix the problem quickly.
