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When illuminated, the dreaded check engine light can represent any number of problems for your vehicle. For more than 50 years, Mr. Transmission has been providing transmission maintenance, clutch repair, and other car repairs to drivers throughout Cincinnati and Sharonville, so when your car’s check engine light comes on, the experienced mechanics at Mr. Transmission can easily diagnose the problem and ensure your vehicle is safe and running smoothly.

Since the check engine light is often not accompanied by any tell-tale signs to disrepair, it can be difficult to pinpoint exactly what caused the light to illuminate. 

Therefore, Mr. Transmission would like to offer these five common reasons for why your car’s check engine light may have come on:

  • Oxygen Sensor: Your oxygen sensor monitors how much fuel your car has burned. Every vehicle has between two and four oxygen sensors, and a faulty one can result in decreased gas mileage. Eventually, it gets covered in oil and cannot adequately perform, causing the light to come on.
  • Loose Gas Cap: If you have a loose or broken gas cap, harmful fumes can be released. This will also cause you to lose fuel, resulting in more trips to the gas station. The cause may be something as simple as the cap not being tightened enough.
  • Catalytic Converter: The catalytic converter changes carbon monoxide into carbon dioxide, thereby protecting the environment. Regular maintenance can prevent the converter from falling into disrepair.
  • Mass Airflow Sensor: This measures the amount of air entering your engine to determine how much fuel is needed for your vehicle to run at an efficient rate. If you don’t replace the air filter at least once a year, your check engine light may come on.
  • Spark Plugs: Responsible for igniting the mixture of air and fuel in your combustion chamber, spark plugs can last for up to 100,000 miles. Replacing your spark plugs is simple and cost-effective.

There are numerous potential reasons for why your car’s check engine light can come on. Once that happens, head to Mr. Transmission as soon as possible for expert advice and repair services. Visit the website or call (513) 769-3111 for more information.

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