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The Five Main Reasons Why the Engine Light Comes On

Model: (Various brands) Various
Part: Warning light – error code

Video tutorial

In this video, discover the main reasons why the engine light may illuminate on your vehicle: the first could be a loose or damaged fuel cap. This is designed to prevent fuel vapours from escaping, and if this occurs, the sensors detect it as a problem.

The second reason is faulty oxygen sensors, which monitor emissions.

They are located in the exhaust pipe, before the catalytic converter, and can become coated with exhaust elements, leading to damage. The third issue could be the catalytic converter itself, which reduces harmful emissions from the exhaust; if acceleration is sluggish and black smoke is coming from the exhaust, it needs to be checked.

The fourth problem might be the mass air flow sensor, which measures the amount of air entering the engine, determining the fuel flow: symptoms include jerky acceleration, engine stalling, and excessive fuel consumption. Lastly, consider the ignition coil, which converts the 12 volts into what is necessary for the engine to operate: it will cause wear on the spark plugs and difficulty starting the engine.


Updated on 29 October 2026 by ScegliAuto


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How to Remove the Rear Seat of a Hyundai Tucson?

To remove the rear seat of a Hyundai Tucson, follow these steps. Start by moving the front seats to their most forward position to gain space. Next, locate the release lever on the underside of the rear seat, near the floor. Press this lever down while pulling the seat upwards to unlock it from the anchor pins. Once unlocked, tilt the seat upwards and forwards to remove it from its position. Repeat this process for both sides of the rear seat. Be careful of any electrical cables or components that may be connected to the seat during removal. Once the rear seat is removed, the disassembly is complete.

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by ScegliAuto

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