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—also known as the malfunction indicator lamp (MIL)—is your vehicle's way of telling you something's not right. When the onboard computer detects an issue with your engine, emissions, or other critical systems, the light will either remain steady (for minor concerns) or flash (indicating a more urgent problem that needs immediate attention).
Common reasons your check engine light may come on include:
- Oxygen sensor faults (P0150–P0175): These affect your air-fuel ratio and can reduce fuel efficiency or increase emissions.
- Engine misfires (P0300–P0305): Often caused by ignition problems like faulty spark plugs or fuel delivery issues.
- Evaporative emissions leaks (P0400–P0499): A loose or cracked gas cap is one of the most common culprits.
- Catalytic converter issues (P0420–P0434): These affect emissions and can reduce engine performance if left unresolved.
Responding to these alerts early helps prevent costly damage, improves your fuel economy, and ensures your vehicle stays road-safe and emissions-compliant in Argyle and beyond.
Our Diagnostic Process
At Christian Brothers Automotive Argyle, we use a proven five-step process to accurately diagnose and resolve your check engine light concerns, with no guesswork involved.
Here's what you can expect:
- Quick Appointment & Initial Scan: Share your symptoms with our team, and we'll run a targeted scan using advanced diagnostic equipment.
- Comprehensive Inspection: Our ASE-certified technicians perform a full check of your engine, transmission, emissions, and electrical systems to find the true source of the issue.
- Digital Vehicle Inspection Report: You'll receive a detailed DVI with photos, videos, and a prioritized repair plan to help you make informed decisions.
- Transparent Review & Approval: We clearly explain our findings, answer your questions, and review your options—no pressure, just facts.
- Accurate Repairs & Verification: Once you approve the work, we perform precise repairs and re-test your vehicle to ensure the problem is resolved before resetting the light.
Why Argyle Drivers Trust Us for Check Engine Light Service
At Christian Brothers Automotive Argyle, we believe in service that's honest, efficient, and focused on long-term results.
Here's why local drivers continue to choose us:
- Advanced Diagnostic Tools: We use dealership-level OBD-II scanners and software for precise error code readings and system analysis.
- ASE-Certified Technicians: Our experienced team knows how to interpret even the most complex fault codes and trace the real source of the issue.
- Clear, Honest Communication: No confusing jargon—we explain what's going on and why it matters in straightforward, easy-to-understand terms.
- Safety-Focused Repairs: We prioritize repairs that impact your safety, vehicle reliability, and emissions compliance.
- Convenient & Comfortable Experience: Enjoy a clean waiting area, complimentary shuttle service, and efficient appointment times that suit your schedule.
Every visit is rooted in trust, quality, and a commitment to keeping you—and your vehicle—safely on the road.
Don't ignore your check engine light!
Call us at (940) 245-5705 or contact us online to schedule your diagnostic to get the answers you need and the care your vehicle deserves.
Frequently Asked Questions
Is it safe to drive with the check engine light on?
If the light is steady and the car seems to be running normally, it's usually safe to drive short distances, but you should have it inspected soon. A flashing light, however, indicates a serious issue such as an engine misfire, and you should stop driving and seek service immediately.
What are the most common reasons a check engine light turns on?
Typical triggers include a faulty or loose gas cap, oxygen sensor failure, catalytic converter issues, mass airflow sensor problems, or worn spark plugs and ignition coils.
How much does it cost to diagnose a check engine light?
Diagnostic costs can vary, but at Christian Brothers Automotive Argyle, we offer affordable and often complimentary diagnostics when paired with repairs. We always provide transparent pricing upfront.
Will the check engine light turn off by itself?
If the issue is minor and resolves on its own, the light may turn off. However, it's still best to have your vehicle checked to ensure there's not an underlying issue that could resurface or worsen.
How long does it take to diagnose a check engine light issue?
Most diagnostics take under an hour. For more complex problems, additional testing may be required, but we'll keep you informed throughout the process so you're never left in the dark.
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.