What to Expect with a Check Engine Light Diagnostic Service
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.
Did You Know: On average, cars spend 95% of their lifetime parked.
What Does the Check Engine Light Mean?
Your check engine light—or malfunction indicator lamp (MIL)—alerts you when your vehicle's computer detects an issue across any number of systems, from emissions to engine controls. It stays steady for minor issues, but flashes if it's a serious fault demanding immediate attention.
Common triggers include:
- Oxygen sensor faults (P0150–P0175): Affect fuel mixture and emissions efficiency.
- Engine misfires (P0300–P0305): Can signal ignition issues like spark plugs or fuel problems.
- Evaporative emissions leaks (P0400–P0499): Often caused by a loose or faulty gas cap.
- Catalytic converter issues (P0420–P0434): Affect emissions control and engine performance.
Addressing these warnings early helps prevent damage to critical systems, improves fuel efficiency, and ensures your vehicle remains safe and compliant.
Our Diagnostic Process
At Christian Brothers Automotive Grayson, we follow a clear, five-step diagnostic process to accurately identify and resolve your check engine light issue, without guesswork.
You can expect:
- Fast Appointment & Initial Scan: Let us know what alerted you; we match your symptoms and begin a targeted scan.
- Complete Vehicle Inspection: Using manufacturer-level OBD-II scanners, our ASE-certified techs dive deep into your engine, transmission, and emissions systems to find the root cause.
- Digital Vehicle Inspection Report: You'll receive a clear report with photos, video, and a prioritized repair plan.
- Transparent Review & Approval: We walk you through the findings, explain necessary repairs in plain language, and help you choose the best path forward.
- Accurate Repair & Confirmation: Once approved, we perform the repairs or maintenance, then verify the issue is resolved, only clearing the light when it's truly fixed.
Why Grayson Drivers Trust Us
When it comes to check engine diagnostics, Christian Brothers Automotive Grayson delivers reliable service you can depend on.
Here's how we set ourselves apart:
- State-of-the-Art Tools: We use the same high-tech scanners and diagnostic gear as dealerships for fast and accurate results.
- ASE-Certified Technicians: Our skilled team interprets complex codes and tests every system thoroughly.
- Clear Communication: No mechanics' jargon—just straightforward descriptions of what's wrong and why it matters.
- Your Safety First: We prioritize repairs tied to safety, emissions, and long-term performance.
- Customer Convenience: Enjoy a welcoming waiting area, shuttle options, and timely service delivery.
Every step of our service delivers the clarity, respect, and expertise Grayson drivers expect—and deserve—from their trusted auto care partner.
Whether your check engine light is merely a nag or a flashing alert, don't wait.
Contact us at (678) 679-9184 or online to book your check engine light diagnostic and get precise answers that keep you driving confidently.
Frequently Asked Questions
Is it safe to drive with the check engine light on?
It depends. If the light is steady and your vehicle seems to be running normally, it's likely safe for short distances, but you should have it checked as soon as possible. A flashing light indicates a more serious issue, like a misfire, and you should stop driving and seek service immediately.
What are the most common reasons a check engine light turns on?
Some of the most frequent causes include a loose or faulty gas cap, oxygen sensor failure, catalytic converter issues, mass airflow sensor problems, or spark plug/ignition coil failure.
How much does it cost to diagnose a check engine light?
Costs can vary based on the issue, but many shops—including Christian Brothers Automotive Grayson—offer affordable or even complimentary diagnostic services with repairs. We'll always explain pricing upfront before any work is done.
Will the check engine light turn off by itself?
Sometimes, yes, if the issue was minor and resolved itself. However, it's always best to have the system checked to avoid ignoring a potentially serious problem.
How long does it take to diagnose a check engine light issue?
Most diagnostics can be completed within an hour. More complex problems may require additional testing, but we'll keep you informed every step of the way.
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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"I liked the customer service and going above and beyond to make sure I was comfortable while waiting in the store for my vehicle work to be done, specifically being offered a nice hot coffee with creamer."
- J.L.