Check Engine Light Service in Collierville

Full-Service Diagnostics & Repairs for All Makes and Models

That amber warning light means your vehicle’s onboard computer has detected a fault in the engine, transmission, emissions, or sensor systems. It could be something minor, or it could be the start of a more expensive problem. At Christian Brothers Automotive Collierville, our ASE-certified technicians go beyond basic ODB scanner codes to find what actually triggered the warning and address it, right here in Collierville.

We service all makes and models: gas or diesel, foreign or domestic, car or truck. As the only AAA-approved auto repair shop in Collierville according to our shop’s listing, we bring dealership-level diagnostic equipment to a neighborhood shop you can trust.

Don’t ignore a check engine light in Collierville. Call (901) 716-8146 to schedule a diagnostic appointment, or book online at cbac.com/collierville.

Full Service Diagnostic Testing: More Than a Code Scan

A basic code reader tells you a fault code was stored. It doesn’t tell you which component failed, why it failed, or whether a manufacturer Technical Service Bulletin applies to your specific vehicle. Our Full Service Diagnostic Testing goes further.

We use the same manufacturer-recommended diagnostic equipment dealerships use. That means we can read not just the stored code but also when it was set, how many times it triggered, and what the vehicle’s sensors recorded at the time. Cross-referencing that data with applicable Technical Service Bulletins helps our technicians trace the code to its root cause rather than guessing at a fix.

Common check engine light triggers we diagnose include:

  • Loose or missing gas cap causing an evaporative emissions leak
  • Failing oxygen sensor affecting fuel trim and emissions readings
  • Catalytic converter failure typically preceded by other unresolved faults
  • Ignition coil or spark plug misfire particularly important to address quickly if the light is flashing
  • Mass airflow sensor fault affecting fuel delivery calculations
  • EVAP system leak from hoses, purge valves, or the fuel tank itself

Once we identify the cause, we explain our findings in plain language and get your approval before any work begins. If a repair is needed, we can complete it at the same location, covered under our 3-year/36,000-mile warranty.



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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.

Call For a Quote

You Approve Every Repair Before We Begin

Our owners, Bart and Crystal Fabacher, are on-site every day. When our technicians finish diagnosing your vehicle, we explain what we found and what we recommend in straightforward language. No jargon, no pressure. Nothing gets repaired or replaced without your explicit consent. That’s not just a policy; it’s how Bart and Crystal run their shop.

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Why Collierville Drivers Choose Christian Brothers Automotive Collierville

National recognition and local accountability don’t often come in the same package. Christian Brothers Automotive Collierville earned the highest score for aftermarket full-service maintenance and repair in the J.D. Power 2025 U.S. Aftermarket Service Index (ASI) Study, the sixth consecutive time Christian Brothers Automotive has held that position, with a score of 855 out of 1,000.

Christian Brothers Automotive received the highest score for aftermarket full-service maintenance and repair in the J.D. Power 2019, 2021–2025 Aftermarket Service Index (ASI) Satisfaction Studies of customer satisfaction with automotive aftermarket service providers. Visit jdpower.com/awards for more details.

Here’s what sets this location apart:

  • AAA-Approved Shop The only AAA-approved auto repair facility in Collierville, per our shop’s listing
  • ASE-Certified Technicians Every check engine light diagnostic is performed by a certified technician
  • Dealer-Grade Equipment Manufacturer-recommended diagnostic tools, not generic code scanners
  • 3-Year/36,000-Mile Warranty Covers repair work, whichever milestone comes last
  • Complimentary Shuttle Service Drop off your vehicle and carry on with your day
  • Free Courtesy Inspection Included with every visit so we can flag anything else that needs attention
  • Owner/Operators On-Site Bart and Crystal Fabacher are here; you can talk directly to the people responsible for your vehicle
Drivers throughout Collierville and Fayette County rely on us for a thorough diagnosis and repair recommendations. Call (901) 716-8146 or schedule online at cbac.com/collierville to get your vehicle in today.

Common Check Engine Light Causes & What to Expect

The check engine light is part of the OBD-II system, the standardized on-board diagnostic protocol required on all vehicles sold in the U.S. from the 1996 model year forward. When a sensor or system reads outside normal parameters, the vehicle’s computer logs a diagnostic trouble code and illuminates the warning light.

Steady Light vs. Flashing Light

A steady check engine light means the issue should be addressed soon but isn’t an immediate safety emergency. A flashing light is different: it signals an active condition, often an engine misfire that can damage the catalytic converter quickly. If your light is flashing, reduce speed, avoid heavy acceleration, and bring the vehicle in as soon as possible.

What a Full Diagnostic Scan Surfaces

Beyond the codes that triggered the warning light, a complete diagnostic scan can surface pending codes: faults the computer has detected that haven’t yet lit the dashboard. Catching those early can help identify developing issues. Clearing a code without repairing the underlying cause can bring the light back; confirming the repair with a test drive to verify the code doesn’t reset is part of our process.

What Happens at Your Appointment

Our technicians connect manufacturer-recommended diagnostic equipment, retrieve all stored and pending codes, review applicable Technical Service Bulletins for your vehicle, and trace each code to its specific cause. We then walk you through the findings in plain language. If a repair is recommended, we provide the full scope and cost for your approval before any work begins. All repairs are backed by the 3-year/36,000-mile warranty, and our complimentary courtesy inspection means we won’t overlook anything else your vehicle might need. We service every make and model, so whether you drive a domestic truck or a foreign sedan, our ASE-certified technicians can handle it.

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Your Local Christian Brothers Amenities

Certified Technicians
Free Shuttle Service
Free Wifi
Courtesy Inspections

FAQs

  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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

  • "When you want into this automtive service center its an entirely different experience. There is not push to spend money, no feeling that they care more about your wallet then they do your business. They give good solid advice, but you stay in control. They"

    - Charlie Keffeler

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