Our Check Engine Light Diagnostic Process
We follow a consistent three-step process for every check engine light visit, designed to give you a complete picture of your vehicle’s condition and full control over what happens next.
Step 1: Full Service Diagnostic Testing
Our technicians retrieve the diagnostic trouble codes stored in your vehicle’s onboard computer, then perform additional system-specific testing to confirm which component has actually failed. A trouble code identifies a system fault; it doesn’t always point to a single failed part. That additional testing is what separates a real diagnosis from a code read.
Step 2: Clear Explanation of Findings
Before any work begins, we present our findings and recommended repairs in straightforward terms. You’ll understand what’s wrong, what fixing it involves, and what can happen if it’s left unaddressed. The decision is always yours.
Step 3: Repair Covered by the Nice Difference® Warranty
Once you approve the work, our technicians complete the repair using manufacturer-quality equipment. Every qualifying repair is backed by the Nice Difference® Warranty, giving you protection that extends beyond the industry standard.
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.
The Nice Difference® Warranty on Check Engine Light Repairs
Most shop warranties expire at whichever of two limits arrives first, time or mileage. The Nice Difference® Warranty works differently: it covers parts and labor for 3 years or 36,000 miles, whichever limit occurs last.
The warranty covers defects in new parts and improper installation, and it’s valid at any Christian Brothers Automotive location nationwide, so you’re covered even when traveling. Keep your original repair invoice to file a claim.
Common Reasons Your Check Engine Light Is On
Several components can trigger the light. Here are the faults our technicians diagnose most frequently:
- Oxygen sensor malfunction: A faulty oxygen sensor skews the air-fuel mixture reading, reducing fuel economy and increasing emissions output.
- Loose or damaged fuel cap: One of the simplest causes. A cap that doesn’t seal properly after refueling can illuminate the light within a day or two.
- Catalytic converter issues: The catalytic converter processes exhaust gases into less harmful output. When it fails, emissions performance drops and the light comes on.
- Ignition coil and spark plug problems: Worn spark plugs or a failing ignition coil can cause engine misfires, rough running, and elevated emissions.
- Mass airflow sensor malfunction: This sensor measures the air entering the engine. When it fails, drivers often notice poor acceleration, rough idling, or difficulty starting.
Keep in mind that a diagnostic trouble code identifies the affected system, not necessarily the specific failed part. Professional diagnosis helps prevent unnecessary part replacements and helps get the repair right the first time.
Schedule Check Engine Light Service in Loveland
We serve Loveland, South Fort Collins, Johnstown, and the surrounding Larimer County area.
Call Christian Brothers Automotive Loveland CO at (970) 707-5088 or schedule your appointment online to get your check engine light diagnosed by ASE-certified technicians who can tell you exactly what they find.
What to Expect During Your Diagnostic Appointment
When you bring your vehicle to Christian Brothers Automotive Loveland CO for a check engine light concern, we start with Full Service Diagnostic Testing. Our technicians retrieve the trouble codes stored in the engine control unit (ECU) and then run additional tests to confirm which component has failed. This step helps prevent the parts-swapping cycle that happens when a shop treats a code as a diagnosis rather than a starting point. The free Digital Vehicle Inspection documents findings with actual photos of your vehicle so you can see the condition of the components in question rather than taking our word for it. Resolving the underlying cause can also help restore fuel efficiency and help prevent the problem from escalating into more expensive engine damage.
Steady Light vs. Flashing Light: What Each Means
A steady check engine light typically indicates a non-emergency fault. You have some time to schedule a diagnostic, but the issue should be addressed soon to keep it from worsening. A flashing or blinking light is a different situation. It usually signals an active engine misfire, which can damage the catalytic converter quickly. If your light is flashing, reduce speed and get the vehicle to a shop promptly.
Neither condition should be ignored. Early diagnosis can reduce the cost and complexity of the eventual repair.
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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"Christian Brothers has always done a great job on my vehicle. I really like that they do a review on repairs that will be needed at some point. I get a list that I can choose from and schedule priority repairs. They also will take me home and pick me up wh"
- Rocky Halbert