How Check Engine Light Diagnostics Work
A diagnostic evaluation starts with the warning you noticed and any changes in how the vehicle drives, starts, or accelerates. We combine advanced technology with straightforward explanations throughout the evaluation.
A complete evaluation may involve:
- Reviewing the concern: The dashboard warning and reported driving symptoms provide context for the evaluation.
- Reading scan data: OBD diagnostic codes identify the vehicle system reporting a problem and help direct further evaluation.
- Inspecting the vehicle: Scan information and a vehicle inspection help identify the condition responsible for the code.
- Explaining recommendations: Repair recommendations follow the identification of the condition causing the warning.
A diagnostic code isn’t a definitive diagnosis of a failed part. It indicates where the vehicle detected an abnormal condition, which is why replacing a component based only on a quick code reading can miss the underlying issue.
Our process goes beyond a basic scan and can uncover hidden or developing vehicle issues, sometimes before another dashboard warning appears.
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.
On-Site Ownership & AAA Approval
Chris and Nikki Bundrick own and operate Christian Brothers Automotive Acworth, and owner/operators are on-site. Their presence provides direct accountability for the customer experience and the work performed at the shop.
We’re also an AAA Approved Auto Repair facility. This recognition reflects our commitment to careful diagnostic and repair work for drivers seeking a clear answer about a dashboard warning.
Documented Findings with a Digital Vehicle Inspection
We provide a free Digital Vehicle Inspection during servicing. It includes actual photos of your vehicle, giving you a documented view of relevant observations instead of only a verbal description.
The inspection helps you understand our recommendations and available options. Paired with a clear explanation of our findings, the photos can help you make an informed decision about the work you authorize.
Steady vs. Flashing Check Engine Lights
A flashing check engine light generally indicates a more severe problem than a steady warning. It can signal an engine misfire, which occurs when one or more cylinders don’t burn the air and fuel mixture correctly. Continuing to drive may damage the catalytic converter or cause other serious harm.
Reduce driving and seek professional guidance promptly when the light is flashing. The safest response depends on the vehicle’s behavior and other warning signs, so don’t attempt to identify the problem from the light alone.
A steady check engine light typically indicates a less urgent condition, but it still deserves attention. Arrange an evaluation rather than ignoring it, especially if you notice rough running, reduced power, unusual sounds, or other changes.
Common Causes of a Check Engine Light
Many vehicle systems can activate the same dashboard light. The cause may be a simple sealing problem or a condition affecting combustion or emissions performance.
Potential causes include:
- Loose or faulty gas cap: An inadequate seal can trigger an emissions-related warning.
- Failing oxygen sensor: The vehicle may detect an issue with a sensor that monitors oxygen in the exhaust.
- Spark plug or ignition coil problems: Worn spark plugs or faulty ignition coils can contribute to an engine misfire.
- Deteriorating catalytic converter: A converter that isn’t operating correctly can cause the light to appear.
These examples aren’t a diagnosis of your vehicle. Proper check engine light diagnostics are necessary to determine which system set the code and what condition is actually responsible.
Schedule Check Engine Light Service in Acworth
Our free shuttle service can keep your day moving while your vehicle is being serviced. Work performed at our Acworth location is covered by the Nice Difference® Warranty for three years or 36,000 miles, whichever occurs last.
We’ll explain our findings, show available inspection photos, and discuss recommendations before you decide how to proceed. You’ll have practical information about the warning and your options for addressing it.
Call (770) 661-0153 to schedule Check Engine Light Services.
Diagnostic Charges & Extended Warranty Coverage
Diagnostic charges vary by repair facility, as do policies on crediting those charges toward completed repairs. Ask about the applicable charge and credit policy before authorizing service so you know what to expect.
Extended warranty coverage depends on the vehicle’s contract and authorization from the warranty administrator. If you plan to use this coverage, have your contract or coverage information available before authorizing repairs. Confirm covered components, required approvals, and any deductible through the applicable warranty process.
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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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"Excellent service, i had my audi a7 repaired at this great location and had a great experience with their service . completed satisfied and will continue to use their great service."
- Ezel W