Engine Diagnostics

When your “check engine” light comes on, your OBD system has recorded a code for the problem. Book your vehicle in with Glenn Dale Tire & Auto. If that light is on, don’t wait: book your engine diagnostics today. Over 25 years of experience, right here in Glenn Dale, MD.

Book Now (240) 260-3955

On This Page

How It Works
Signs and Symptoms
Why It Matters
What We Do

More Engine Diagnostics Services

Engine Tune-Up

How the OBD System and ECU Work

The OBD System, or On-Board Diagnostics System, was originally installed to monitor vehicle emissions, but it also detects problems within the engine. Both OBD I and OBD II systems exist, with OBD II systems becoming the standard in vehicles manufactured after 1996.

The OBD is connected to the engine control unit (ECU), which helps your engine run efficiently while keeping emissions low. The OBD can identify and warn the driver of engine malfunction by sending error notifications to the ECU system. The ECU is in charge of several engine processes, including the mixture of air and fuel, emissions, and engine timing.

The ECU uses sensors to monitor them or make adjustments. If the ECU detects malfunctions, it triggers the “check engine” light on the dashboard. The OBD system then records the code pertaining to the problem. The code can be accessed by a trained technician through engine diagnostic equipment in order to properly diagnose the issue.

Signs and Symptoms of an Engine Malfunction

You should have engine diagnostics performed when the “check engine” light comes on.

Why Engine Diagnostics Matters

Engine diagnostics serve to keep your engine running efficiently. The OBD system is capable of detecting malfunctions before they lower engine performance or cause severe damage. Because of the mandatory OBD system, your automobile is capable of monitoring and diagnosing its own performance.

Engine diagnostics will help detect problems early so that minor problems never become major problems. Engine diagnostics also help keep emissions low, and if your engine is malfunctioning, your vehicle might not pass an emissions test.

What We Do When Your Check Engine Light Turns On

When your “check engine” light turns on, it is time for you to contact us for an engine diagnostics service. Our experienced staff will work hard to get your engine working again properly in no time.

Book Now (240) 260-3955

Engine Diagnostics in Glenn Dale, MD

Glenn Dale Tire & Auto provides Engine Diagnostics services to Bowie, Lanham, Greenbelt and other towns within 30 miles of Glenn Dale, MD.

Do Not Choose Your Shop By Accident! We Pledge From The Moment You Walk In To Our Facility, Until You Leave, You Will Be Worry Free & Protected With The Best Warranty In The Business!

Schedule your Engine Diagnostics today.

Book Now (240) 260-3955

Frequently Asked Questions

We are located at 11900 Annapolis Road, Glenn Dale, MD 20769. We have over 25 years of experience in the industry, including Engine Diagnostics. Here are answers to common questions about Engine Diagnostics.

Questions About Engine Diagnostics

: The OBD System, or On-Board Diagnostics System, was originally installed to monitor vehicle emissions, but it also detects problems within the engine. Both OBD I and OBD II systems exist, with OBD II systems becoming the standard in vehicles manufactured after 1996.
: The ECU is in charge of several engine processes, including the mixture of air and fuel, emissions, and engine timing. The ECU uses sensors to monitor them or make adjustments.
: If the ECU detects malfunctions, it triggers the “check engine” light on the dashboard. The OBD system then records the code pertaining to the problem.
: You should have engine diagnostics performed when the “check engine” light comes on.
: Engine diagnostics also help keep emissions low, and if your engine is malfunctioning, your vehicle might not pass an emissions test.

Questions About Glenn Dale Tire & Auto

: Yes, you can, but we encourage our customers to drop off vehicles for any service that takes more than 90 minutes.
: You can book online using the green Book Now buttons or call us directly at (240) 260-3955 to confirm the next available appointment.
: Yes, we do. You will be given a 12-month/12,000-mile warranty on our labor. All parts are guaranteed as per the manufacturer's warranty for each specific part.
: We work on all makes and models of domestic and foreign standard passenger cars and trucks.
: We can often arrange loaner vehicles or local shuttle service depending on availability. Please call (240) 260-3955 to coordinate this before your appointment.
: Your owner's manual provides all necessary information regarding what parts to replace and when to do it. Read it thoroughly and note any exceptions or severe service notations. Warranties are there to protect the consumer, but you must follow the requirements. If you have questions about warranties, please contact us.
: You can schedule your free estimate by filling out a form on our website or by calling us at (240) 260-3955.

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Customer Testimonials

We stand by our work.

- The owner John is very knowledgeable and the whole staff is friendly. I came for an oil change and to have my tires serviced (rotation, alignment and balance) because I thought they needed it. John told me I didn't need service to my tires and they rode very well; no need to spend the money on a service that wasn't needed. We all know many establishments would try to push a service for a dollar so his honesty is appreciated. Reasonable pricing and great service. Highly recommend! Services: Tire rotations, Oil change
  Ashley B.
  Google Review
- They did a great job of stopping the noise from my car. They checked and rechecked everything to ensure it was safe and drivable. Did not feel like they were hustling and trying to run my bill up. They did an awesome job. I definitely recommend their services.Services: Wheel alignment, Steering & suspension repair
  Stephanie Gilliam
  Google Review
- Excellent, fast and efficient services. And their prices are awesome!!! Services: Tires, Oil change
  Andre Stewart
  Google Review
- I dropped by here today as my brakes were making an excruciating sound. They were able to take me in as a drop in and was out soon enough to continue to my brunch. I was able to also get my headlights changed as well. Friendly staff and would recommend taking the drive from va where I reside. Thanks again guys! Services: Battery, Brakes
  Shakira Richards
  VA Resident
- Since 2003 I have entrusted all my vehicular repairs and maintenance to John and his team at Glenn Dale, Tire, Auto & Roadside Assist. In that time I have referred my family and friends to this shop. You are in safe and steady hands with John.
  Ayawa Aklasu
  MD Resident
- Very honest and experienced mechanics. Friendly and courteous service, reasonable and affordable rates. Services: Auto maintenance, General repairs & maintenance, Wheel alignment, Steering & suspension repair, Steering & suspension replacement
  Nyoh Claudia
  Google Review
- I came in for an oil change and to get some of my lights changed on my vehicle and they were very busy but they communicated very well with me about when they would have time I highly recommend being any of your vehicles here. The owners are wonderful and honest so that’s alway a plus.
  Daniel Charles
  Google Review
- Very knowledgeable HONEST people. Saved me over 2K based on a quote I would have received from another shop. Services: Tires, Steering & suspension repair, Brakes, Electrical
  Ronnell Fields
  Google Review
- I had slow leak from a nail puncture and I was told by another tire shop that run flat tires could not be fully patched. He said it would cost $75 for a temporary fix but he recommended replacing, so I bought another tire online. [...] Thomas did such great work that it was not a temp fix at all and basically let me know the other place did not know what they were talking about. I have had no issues with the tire and its been over 3 months. He also said the repair came with a lifetime warranty so this place is all good in my book. Highly recommend. Service: Tires
  Roxy
  Washington, DC Resident