1. Schedule Your Appointment
Whether scheduling online or over the phone be sure and let us know what you're experiencing so we can provide fast and accurate service advice.
2. Diagnostics and Inspections
Drop off your vehicle and the shop will get to work with inspections and diagnostics using the same equipment as the manufacturers to determine issues and next steps.
3. Digital Vehicle Inspection Report and Estimate
Following the diagnosis we will text you a digital vehicle inspection report, containing pictures and videos of our findings and recommendations.
4. Review and Approval
A service advisor will reach out to walk you through the findings and recommendations to determine how you would like to proceed, or you can approve work directly in your DVI.
5. Work Performed or Scheduled
Most work can be completed immediately, or scheduled based on parts and customer availability.
Diagnosis That Goes Deeper
A stored trouble code points to a system with a problem, not necessarily to the specific part that failed. Professional diagnosis is what bridges that gap. Our Full Service Diagnostic Testing goes beyond basic ODB scanner codes to pinpoint the actual problem, and every repair that follows is covered by the Nice Difference Warranty: 3 years or 36,000 miles.
What the Check Engine Light Is Telling You
The check engine light can come on for reasons ranging from a loose gas cap to a failing catalytic converter, a misfiring ignition system, or an oxygen sensor malfunction that’s quietly hurting your fuel economy and emissions output. The light itself doesn’t tell you which one.
Pay attention to how the light behaves. A steady light generally signals a condition that should be diagnosed soon. A flashing or blinking light indicates a more serious active fault and warrants stopping driving and seeking service right away.
An OBD code reader retrieves the trouble code stored by the vehicle’s computer, but it doesn’t identify which specific component failed or why. A qualified technician has to test the system to determine the correct repair. Driving with an undiagnosed check engine light can allow a contained problem to spread to related components, turning a straightforward repair into a costly one.
If your check engine light is on, don’t wait. Call (678) 996-1767 or book online to schedule a diagnostic appointment at Christian Brothers Automotive Smyrna. We serve drivers throughout Smyrna, GA, and the surrounding Cobb County area.Common Causes Behind the Check Engine Light
Several systems and components are frequent triggers when the check engine light comes on. Knowing the most common ones helps explain why a full diagnostic matters more than a quick code read.
Frequent Check Engine Light Triggers
Oxygen sensor failure is one of the most common causes, affecting how the engine manages fuel mixture and how accurately emissions are measured. A loose or damaged fuel cap triggers evaporative emissions system codes and is one of the easiest fixes when caught early. Catalytic converter problems, spark plug or ignition coil faults, and mass airflow sensor issues round out the most frequently seen causes.
Why Diagnostic Depth Matters
Modern vehicles store more than just the trouble code. Freeze-frame data captured at the moment the fault occurred, including sensor readings and how many times the code has been triggered, gives our technicians a fuller picture before any parts are tested or replaced. We also reference Technical Service Bulletins, manufacturer-issued documents cataloging known causes for specific diagnostic codes on specific makes and models. These are especially useful for faults that have returned after a previous repair attempt elsewhere.
Replacing parts based solely on a trouble code without this level of diagnostic work frequently results in unnecessary costs and a check engine light that returns because the underlying cause was never actually identified.
Your Local Christian Brothers Amenities
FAQs
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Q. "What is the difference between a steadily lit and a flashing check engine light?"A steadily lit light means that a sensor is sending a signal to your vehicle's computer that something is wrong or it could simply mean that the sensor is out. If your check engine light is flashing, however, that means there is a serious issue and you should stop driving immediately.
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Q. "Why is my check engine light on but nothing seems to be wrong with my vehicle?"If nothing within your vehicle stands out, then it is possible that it is just a minor issue such as a loose gas cap or a bad O2 sensor. It is still recommended to see a mechanic if the light doesn't disappear to check for any larger issues.
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Q. "Do you offer a warranty?"As part of our Nice difference.® commitment to providing our customers the best auto service experience possible, we also offer a3-year/36,000-mile warranty on all the work that we do. We offer this warranty at every Christian Brothers Automotive nationwide, and it will be honored at any location, regardless of which branch did the initial work.
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Q. "Can you provide service under my extended warranty?"Yes. At Christian Brothers Automotive, we work with all major extended warranty providers to make needed repairs for our customers. If you have an extended warranty, you can discuss your carrier with our team when scheduling an appointment and confirm that the work will be covered. You can find a partial list of the extended warranty companies we work with here.
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Q. "What to do if your check engine light turns on?"We recommend heading to your local auto shop as soon as you are able. This is typically a sign that there is an abnormality within your engine.
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Q. "Is it safe to drive your car when the check engine light is on?"It depends. If you are experiencing other noticeable issues with your vehicle, it may be best to pull over. Otherwise, it is typically okay to drive to your local auto shop. You will want to get this checked sooner rather than later to avoid being stranded with a broken-down car.
Have more Questions?
Our friendly auto service experts have the answers.
Call your local Christian Brothers Automotive car shop today
Hear What Our Customers Had to Say About Us
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"Wednesday it was my good fortune to have Steve at Christian Bros., Spring Rd, Smyrna, GA assist me. I found Steve to be Courteous, Knowledgeable, and Efficient. Thank you for hiring an excellent employee like Steve!"
- Linda C