How to Identify Signs of Car Engine Trouble Early?

• Oxygen Sensor Issues: Malfunctioning oxygen sensors can send incorrect data to the engine control unit, causing the light to illuminate.
• Faulty Spark Plugs or Wires: Worn-out spark plugs or damaged wires can lead to inefficient combustion, resulting in the light turning on.
• Catalytic Converter Problems: Although rare, minor inefficiencies in the catalytic converter can trigger the warning light.

When you notice the “check engine light on but car runs fine,” these are usually the underlying issues. They are not emergencies but should be addressed to avoid long-term problems.