What Does the Check Engine Light Mean?
The Check Engine indicator lights up when the car’s diagnostics system detects a fault in the engine or related systems.
Common Causes:
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Ignition issues: Spark plugs, coils, or wires.
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Fuel system problems: Fuel pump, injectors, or fuel pressure sensors.
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Exhaust system issues: Catalytic converter, oxygen sensor, or particulate filter.
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EGR system: Dirty or faulty EGR valve.
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Sensor failures: Engine temperature, MAF, throttle position sensors.
What to Do if the Light Comes On:
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Pull over safely and turn off the engine.
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Check oil and coolant levels.
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Restart the engine.
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If the light remains, consult a mechanic or auto service.
Light Colors:
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Red: Severe problem – stop immediately and check the car.
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Yellow: Less critical – can keep driving but service soon.
Ignoring the Check Engine light may lead to engine damage and costly repairs. Always diagnose the issue as soon as possible.
