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.
Our Five-Step Diagnostic Process
Check Engine Light Services at Christian Brothers Automotive Corinth follow a documented process so you know where things stand. We use manufacturer-quality equipment throughout, and most repairs can be completed the same visit.
Here’s how it works:
- Schedule your appointment online or by phone
- Diagnostics and inspection performed by ASE-certified technicians
- Digital Vehicle Inspection report delivered by text with photos and videos of actual findings
- Review with your service advisor and approve or decline each recommended service
- Work performed or scheduled based on parts availability and your approval
The digital vehicle inspection report isn’t a summary; it’s a visual record. You see photos and videos of what our technicians found, not just a list of codes. You can approve work directly through the report or talk it through with an advisor before anything moves forward.
What Triggers a Check Engine Light
The check engine light can be triggered by hundreds of diagnostic trouble codes (DTCs) spanning your engine, emissions, fuel system, and more. Some are minor. Others, left unaddressed, can create damage to related systems.
Common causes include:
- Loose or failing gas cap
- Faulty oxygen sensor
- Failing catalytic converter
- Malfunctioning mass airflow sensor
- Misfiring spark plugs
- Fuel system faults
For drivers putting consistent miles on I-35E, North Texas heat and high-mileage highway driving can accelerate sensor degradation and emissions system wear. A steady malfunction indicator lamp typically points to a non-emergency fault worth addressing soon. A flashing light signals an active fault, often an engine misfire, that needs same-day attention to help avoid further damage.
Why a Code Reader Isn’t Enough
A basic OBD-II scanner retrieves the diagnostic trouble code number, but the code identifies the affected system, not the specific failure point. Knowing the emissions system flagged a fault doesn’t tell you whether the oxygen sensor has failed, whether the wiring to it is damaged, or whether the catalytic converter is the actual problem. Treating the code as the diagnosis often means replacing parts that weren’t the cause.
Professional diagnosis involves verifying system performance across vacuum, fuel delivery, ignition, and emissions against manufacturer specifications. Electrical and electronic faults, including sensor failures, wiring problems, and module communication errors, often require bidirectional scan tools and live data analysis that consumer-grade readers can’t perform. Our technicians go beyond basic ODB scanner codes to confirm the root cause before any repair recommendation is made.
One additional consideration for Denton County drivers: an illuminated check engine light can cause a vehicle to fail a Texas emissions inspection. Resolving the root cause clears the light and allows your vehicle’s readiness monitors to complete their self-checks before reinspection. If you’re carrying an extended warranty, confirm your coverage when you schedule your appointment at Christian Brothers Automotive Corinth and we can work directly with your provider on eligible repairs.
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 will not take my car anywhere else!! A shout out to Brandon, Kyle, and Alex for always providing such family friendly service full of kindness honesty, and integrity. You set the example for everyone else in the company to treat each guest as if they wer"
- Elizabeth