While driving through your day, then suddenly, a light appears in your dashboard. It might look like the outline of an engine or maybe the wording "check" or"check engine" on top of it. This is the check engine light - the most hated sight in the world. We have both bad and good information for you if find yourself in this position. The good news: A check engine light does not necessarily mean that there is something very wrong with your car. The downside is that the check engine light may mean there's something horribly wrong with your vehicle. Don't worry, we'll explain. Common Reasons Why Your Check Engine Light Might Have Come OnLet's take a look at the most common reasons why your check engine light might be lit. 1. Problems with the engineProblems with the engine can trigger the check engine light to blink. The operation of the engine is analyzed by a series of sensors connected to the control module. If it finds a problem, it turns on the check engine light. 2. Transmission problemsThe transmission of your car manipulates engine power and transfers it to the drive wheels. Because the two assemblies work together so closely an issue in the transmission may increase tailpipe emissions. If the control module is able to detect any issue with the transmission it will light up the check engine light. 3. Emissions equipment problemsModern vehicles have a plethora of emissions equipment onboard. There's the exhaust gas recirculation system the catalytic converter, the evaporative emissions system - the list goes on on. Each component is designed to minimize tailpipe emissions, thereby, protecting the environment and making the world a more secure place. We won't get into the various parts and systems separately since, honestly, there are way too many to list. However, we will be honest when we say that an emissions malfunction can quickly turn on the check engine light. 4. Problems with modules and sensors (electronic Powertrain Controls)The powertrains of today are controlled by a array of sensors and components. What's more the modules are connected to each other through a massive data network. Problems with sensors or modules, networks, and wiring may cause the check engine light to flash. 5. Air/fuel delivery problemsThe engine of your car requires the correct amount of both fuel and air to function correctly. The control module can tell whether the engine is receiving too much or too low of either air or fuel. The device then turns on the check engine light. 6. Problems with ignition systemsThe ignition system includes the spark plugs, coil packs, and everything else needed to ignite the air/fuel mixture within the engine. The control module monitors the operation of the ignition system, as you have likely guessed. And it will turn on the check engine light if it detects a problem.
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