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Ignoring a warning light can result in reduced fuel economy, increased exhaust emissions, or severe component failures. Our certified automotive technicians look beyond the initial trouble code to fix the root cause of the problem permanently.
Common Reasons Your Check Engine Light Turns On
- Failing Oxygen Sensors: Worn sensors send incorrect data to the engine computer, which disrupts the fuel mixture and lowers efficiency.
- Worn Spark Plugs or Ignition Coils: Ignition failures cause engine misfires that trip the warning light and make the vehicle shake.
- Defective Catalytic Converter: A failing converter cannot process exhaust gasses properly, which triggers immediate emission system warnings.
Frequently Asked Questions About Check Engine Lights
What should you do if your check engine light starts flashing? If your check engine light begins flashing, you must pull over safely and turn off the engine immediately. A flashing light indicates a severe engine misfire that can rapidly destroy your expensive catalytic converter.
Will a check engine light reset itself after a repair? A check engine light will sometimes turn off on its own after you drive the vehicle for several days through specific drive cycles. However, clearing the computer memory with a professional diagnostic tool after a repair is the most reliable method.
