Check engine light


Mutual Causes for BMW Check Engine Calorie-free

Has the check engine light turned on in your BMW 3-Series, 4-Series, M3, X3, X5, or i3? It tin be alarming seeing an engine warning appear on your dashboard, specially if yous've never seen it before. A wide assortment of issues tin can crusade a check engine light to come on, some more serious than others. Fortunately BMW of Fremont is here to help yous effigy out what might be incorrect, and what your adjacent steps should be. Below nosotros have highlighted the well-nigh mutual causes of a bank check engine light.


  • Loose Gas Cap: Your gas cap is loose, broken, or just missing. Gas cap bug tin reduce fuel pressure and allow fuel vapors to escape, reducing fuel economy and increasing harmful emissions.
  • Declining Catalytic Converter: Your catalytic converter can somewhen clog with material, peculiarly with higher mileage vehicles. The catalytic converter is a vital office of the emissions organisation, removing toxic carbon monoxide. A failing or clogged catalytic converter can severely impact fuel economy and vehicle performance.
  • Fouled Spark Plugs or Spark Plug Wires: Over time you volition somewhen need new spark plugs or spark plug wires. Your spark plugs create a hot spark that ignites the air-and-fuel mixture in the cylinder, assuasive your engine to showtime and run. Faulty spark plugs or spark plug wires can cause your engine to misfire, reducing fuel economy, operation, and even foreclose it from running altogether.
  • Faulty Oxygen Sensor: Due to long exposure to hot frazzle gas, your oxygen sensor might need replacing. The oxygen sensor provides vital air-fuel mixture information to the ECU. A faulty oxygen sensor tin can cause your vehicle'due south computer to supply the engine with as well much or also lilliputian fuel. An engine with also little fuel is at risk of full engine failure, and an engine with as well much fuel will create excessive fume and smell.
  • Faulty Mass Air Menstruum Sensor: When exposed to dirty or particle-rich air, the Mass Air Menstruum (MAF) sensor could fail. Like the oxygen sensors, the MAF sensor measures the amount of air entering the engine and aid ensure the proper air-fuel mixture. A faulty MAF sensor tin cause your engine to misfire, ultimately causing poor fuel economy, functioning, and potentially more unnecessary damage to your engine.

What to Do if Your BMW Bank check Engine Light Comes On

No affair the state of affairs, when the check engine light comes on in your BMW, we ever suggest stopping by our service centre so one of our knowledgeable technicians can properly diagnose and repair your vehicle. Our service technicians have the near up-to-date diagnostic equipment that can quickly read BMW OBD codes.

The style your check engine low-cal is behaving though can help yous make up one's mind what might be wrong with your [Dealership Make], and the severity of the issue. To aid you lot better understand what you should do side by side, nosotros've outlined possible scenarios:


  • The cheque engine calorie-free only comes on in certain conditions: If the bank check engine lite is coming on intermittently, be sure to notice any changes in the performance of your vehicle when the light is on. If y'all do notice a difference, attempt driving your vehicle as piddling as possible until you can bring it in for service. Most likely something is on the verge of declining and you run this run a risk of your vehicle non starting again.
  • The check engine calorie-free is constantly on: Your vehicle's onboard diagnostic organisation has determined something is wrong and needs to be stock-still. Although your vehicle may seem to be operating fine, information technology'southward best to bring information technology in for service every bit soon equally possible to prevent additional issues.
  • The cheque engine calorie-free is on and at that place is a noticeable performance outcome: If y'all are noticing a consistent subtract in performance with the check engine light on, your vehicle may have automatically entered a "limp-style" to prevent additional harm. In this example, you should come up straight to our service center or accept the vehicle towed to prevent any damage to the engine..
  • The cheque engine calorie-free is blinking while driving: Not to exist dislocated with the light occasionally flickering in the beginning situation, if your check engine calorie-free is blinking consistently that typically indicates there is a major issue with your vehicle and you lot should pull over when safe. If y'all are not close to our service heart, nosotros suggest having your vehicle towed here just to be prophylactic.

If you whatever additional questions regarding cheque engine lights, please requite us a telephone call at (510) 224-4820 to speak with one of our teammates, or just schedule an appointment with our online form.


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