Colorado Emissions Testing & Vehicle Registration
Colorado requires emissions testing for vehicle registration in specified counties and in portions of Adams, Arapahoe, Larimer, and Weld counties. Because testing requirements depend on the vehicle’s registered address, Commerce City drivers should contact the Adams County DMV to confirm whether their address is within the emissions-testing area.
Testing frequency is based on model year:
- Model-year 1982 and newer vehicles require an emissions test every other year.
- Model-year 1981 and older vehicles require an emissions test every year.
Check engine light diagnostics identify why the vehicle’s onboard system stored a fault. Registration testing remains a separate requirement determined by the applicable Colorado emissions program.
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.
Conveniences During Your Service Appointment
Check engine light testing can take time because our technicians move beyond code retrieval to fault confirmation. Customers with appointments can use our free shuttle service rather than waiting throughout the diagnostic process.
Every appointment also includes:
- Complimentary Courtesy Inspection: We check the vehicle’s lights, brakes, suspension, tires, and battery.
- Comfortable Waiting Options: Customers who choose to wait have access to free Wi-Fi and complimentary refreshments.
Why Commerce City Drivers Trust Christian Brothers Automotive Commerce City
We ranked #1 in Customer Satisfaction Among Aftermarket Full-Service Maintenance and Repair Providers in the J.D. Power 2025 U.S. Aftermarket Service Index Study. We received a score of 855 out of 1,000, which was 39 points above the segment average. The 2025 result marked the sixth consecutive year Christian Brothers Automotive Commerce City earned this distinction. For J.D. Power 2025 award information, visit jdpower.com/awards.
Victor Robert owns and operates our Commerce City business, making him directly accountable for the customer experience and the work performed.
Completed repairs include the Nice Difference® Warranty. Coverage lasts for 3 years or 36,000 miles, whichever occurs last, and is accepted at Christian Brothers Automotive Commerce City locations throughout the country.
Extended Warranty Coverage & Repair Decisions
We must identify the source of the warning light before recommending a repair. The final cost depends on the confirmed fault and the parts and labor needed to correct it, so a stored code alone can’t determine the repair price.
We work with all major extended warranty providers. If your vehicle has an extended warranty, tell our team when scheduling so we can confirm whether your coverage applies to the diagnosed repair.
From Digital Findings to Vehicle Return
After testing, we text you a Digital Vehicle Inspection report with photos and videos of the technician’s findings. A service advisor then calls to review the report, explain the confirmed fault, and answer your questions in straightforward terms.
You can approve recommended work directly through the Digital Vehicle Inspection. Some repairs are completed during the same visit. If parts availability or scheduling requires additional time, we coordinate the repair timing with you before moving forward.
What Your Check Engine Light Is Actually Telling You
The malfunction indicator lamp, commonly called the check engine light, activates when your vehicle’s onboard diagnostic system detects a fault affecting engine performance or emissions. The warning identifies that a fault was detected, but it doesn’t tell you which component failed.
Solid Light vs. Flashing Light
A solid check engine light means the vehicle has stored a fault and should be inspected soon. The underlying problem can affect fuel economy or performance even when the vehicle still appears to drive normally.
A flashing check engine light requires prompt attention and can accompany an active misfire. Continuing to drive with that condition can damage the catalytic converter. If your light is flashing, or if you notice rough running, power loss, or unusual noises alongside it, don’t delay.
Common Check Engine Light Causes
The warning can originate in several systems or components. Because the light doesn’t identify the failed component, proper testing is needed to confirm the cause.
Common triggers include:
- A loose or failing gas cap
- A worn oxygen sensor
- Degraded spark plugs or ignition coils
- A leak in the evaporative emissions system, also called the EVAP system
- A catalytic converter fault
Why a Parts-Store Code Scan Isn’t Enough
A parts-store scan retrieves stored OBD-II diagnostic trouble codes, but each code points to the system that recorded the fault rather than confirming a specific failed part. Replacing a component based only on the code can leave the original problem unresolved.
Our Full Service Diagnostic Testing uses live data analysis, circuit testing, and component verification to establish the cause of the warning. Commerce City drivers, and those coming in from Brighton, can turn to us for check engine light diagnostics on any make or model.
Schedule Check Engine Light Service in Commerce City
Don’t let an undiagnosed check engine light become a larger repair. Bring us your vehicle for testing that identifies the fault and gives you documented findings before you decide whether to proceed.
Call (720) 796-8061 or use the contact form to arrange check engine light diagnostics with Christian Brothers Automotive Commerce City.
Your Local Christian Brothers Amenities
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
-
"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.