check engine light in Columbia

When your check engine light comes on, it means your vehicle’s computer diagnostic system has detected a problem in one or more critical systems. It could mean something as easy to fix as a loose gas cap, or something as serious as a failing catalytic converter. When that happens, you’ll want the trained technicians at Mr. Transmission® Milex® of Columbia to diagnose the problem for you. We use the same technology the dealership does to identify the problem, but without the service charge.

Systems Monitored by the Check Engine Light

You may be tempted to continue driving when your check engine light comes on, but that can be risky. There are multiple engine systems that could be malfunctioning, many of which could lead to significant damage to your engine or exhaust systems. When the check engine light comes on, it could mean you have a problem with one of these systems:

  • Vacuum System: Your vehicle’s vacuum system makes many different things happen in your car. Loss of pressure tends to come from three sources:  A loose gas cap, a failed exhaust gas recirculation valve, and vacuum leaks from bad vacuum hoses.
  • Oxygen Sensor: An important sensor to ensure your engine burns fuel efficiently, a bad O2 sensor can cause significant loss of fuel economy, as well as damage to the spark plugs or catalytic converter.
  • Spark Plugs, Spark Plug Wires, and Ignition Coil: Your vehicle’s ignition system is a major system the ECU monitors. When there are problems, your check engine light will come on and the ECU will generate a problem code to indicate where the malfunction is.
  • Catalytic Converter: The check engine light can indicate a problem with this critical exhaust system component. Driving your vehicle with a failed catalytic converter can cause your engine to run at a higher temperature than it’s designed for, which can lead to internal engine damage. You’ll also suffer reduced performance and fuel economy, and likely fail your emissions test.
  • Mass Airflow Sensor: As with the O2 sensor, the MAF sensor regulates performance and fuel economy. A failed MAF sensor will also cause damage to your spark plugs, catalytic converter, and your O2 sensor.

Make an Appointment at our Columbia Service Center

When your check engine light comes on, bring it to the pros at Mr. Transmission Milex of Columbia. We’ll diagnose the problem for free and give you a competitive quote for any work your vehicle needs. Call us today at (803) 772-7986.