Four Common Issues Signalled By Your Check Engine Light

The check engine light on your vehicle's dashboard can be a source of anxiety for many drivers. It's a clear signal that something is amiss, but without any specific information, it can leave you guessing. Here are five common reasons why your check engine light might come on and when it's time to seek professional automotive repair in Australia.

1. Oxygen Sensor Failure

One common reason for the check engine light to illuminate is a faulty oxygen sensor. This device measures the amount of unburned oxygen in the vehicle's exhaust system. If left unchecked, a failed oxygen sensor can cause the engine to burn more fuel than necessary, decrease mileage and increase emissions. If your check engine light comes on and your vehicle is experiencing decreased fuel efficiency, it's time to consult with an automotive repair expert.

2. Loose Or Faulty Gas Cap

While it may seem trivial, a loose or broken gas cap can actually cause the check engine light to come on. The gas cap seals the fuel system and maintains pressure within the fuel tank. It also prevents gasoline fumes from being released into the atmosphere when your vehicle is not in use. If your check engine light illuminates immediately after refuelling, check your gas cap first—it might just need tightening or replacement.

3. Catalytic Converter Failure

A crucial component of your car's exhaust mechanism is the catalytic converter, which transforms detrimental carbon monoxide and other emissions into less harmful substances. If your vehicle is running at higher temperatures, or you're experiencing a reduction in performance or fuel economy, it could be a sign of catalytic converter failure. This issue requires immediate attention from a professional in automotive repair, as neglecting it can lead to serious damage and costly repairs.

4. Mass Airflow Sensor Failure

The mass airflow sensor is responsible for gauging the volume of air entering the engine, which helps determine the appropriate amount of fuel to inject. A dysfunctional sensor can adversely affect aspects such as fuel efficiency, performance, and emissions. It can also cause the vehicle to stall or prevent it from starting altogether. If you're noticing any of these issues along with the check engine light, an automotive repair service should be your next stop.

While the check engine light can signal a variety of problems, some are more common than others. Oxygen sensor failure, a loose gas cap, catalytic converter failure, and mass airflow sensor failure are all frequent culprits. When your check engine light illuminates, don't ignore it—seek automotive repair promptly to maintain the health of your vehicle and ensure safe driving conditions.

For more information about automotive repair, contact a local auto shop.

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