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What Does My Check Engine Light Mean?

The dreaded check engine light. Nobody likes looking down at their dashboard and seeing this symbol show up. It’s designed to let drivers know that something is wrong with their car. However, in the over 100 years since the invention of the automobile, they still haven’t created a check engine light that tells you exactly what’s wrong with your vehicle. Here are some of the many reasons what your check engine light could mean.

Faulty Gas Cap

Sometimes your check engine light means something as simple as a faulty gas cap. The cap can be loose, damaged, or missing altogether. A faulty gas cap will cause fuel to evaporate and cause you to make more frequent trips to the gas station. You can fix this problem by tightening or replacing the gas cap and your check engine light should turn off. 

Faulty Oxygen Sensor

Did you know that your car has an oxygen sensor? It measures the amount of unburned oxygen in the exhaust system. The consequences of a faulty oxygen sensor are: 

  • Your car engine burning more fuel than needed
  • Lessened fuel economy
  • Damage to your car’s spark plugs and catalytic converter

A certified mechanic can replace your faulty oxygen sensor and get the check engine light to turn off. 

Faulty Spark Plugs or Spark Plug Wires

Your car’s spark plugs ignite the air and fuel mixture in your car’s combustion chamber while their wires deliver the spark from the ignition coil to the spark plug. Your check engine light might mean that there’s something wrong with either one of these things. There are a few possible reasons for why your spark plugs and wires are faulty:

  • Overheating damage
  • Oil contamination
  • Carbon

Bring your car into your mechanic to have your spark plugs and their wiring replaced to avoid any future damage. 

Faulty Mass Airflow Sensor 

Your mass airflow sensor is needed to determine the amount of fuel needed to run your car efficiently by measuring the amount of air entering into the engine. Besides your check engine light turning on, some other indicators that you have a faulty one are: 

  • No-start stalling
  • Lack of power
  • Poor acceleration

Let’s Determine What Your Check Engine Light Really Means 

These are just some of the many meanings for your check engine light. Auto Repair Technology can help you determine the specific meaning of your check engine light. Our team of highly-rated mechanics is here to help you resolve the nightmare a check engine light can indicate. Call or contact us today! 

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