Quality Auto Services in Delaware County, PA

Check Engine Light On

Why my engine light is on?

The check engine light is activated by the car’s internal computer when it detects an issue with the engine or transmission. The causes for the check engine light illuminating can vary, ranging from a minor issue such as a loose gas cap to a more significant problem like a defective catalytic converter.

Free check on engine light on?

YES, we do scan your car and you will get a report with scanning result on it, such as problem code.

Check ≠ Diagnostic

There are plenty of auto parts stores that offer ‘free’ check engine light scans. But, ‘free’ diagnostics aren’t really a diagnostic. The scan tool is capable of indicating the location of the problem, but it lacks the ability to provide a precise identification. Therefore, it is advisable to have a skilled and certified automotive expert invest their time in diagnosing the actual cause behind the error code.

It’s comparable to visiting your doctor and complaining about foot pain. They measure your temperature and conclude that your high fever is likely causing the foot pain. This response doesn’t provide a definitive answer, which is why we suggest a thorough diagnosis for our customers. If your doctor acknowledges your foot pain but cannot determine the cause, it’s probable that they will recommend you to see a specialist. So, it’s kind of the same scenario. A code scan tool can tell you that there’s a problem, but it can’t tell you what it is. You have to be referred to a specialist, and that specialist is my technician


anyone can pull a code for you when your check engine light comes on, but only a certified automotive professional can truly diagnose the real issue behind that warning light. 

Feel free to reach out to us whenever you require assistance.


What We Do

Our abilities extend to both domestic makes and models. Regardless of what you drive,  we’re equipped to fix it.

We provide our drivers with a full range of routine maintenance services, as well as repairs. Plus we are able to offer specially diagnostics to ensure the right repair! 

We accept most Extended Warranties!

Have a hard time finding a place to bring your car for extended warranty? Don’t worry, we accept most extended warranties. Give us a call or just stop by any business hour, let us be your representative, we will talk to your warranty company and maximize your benefit. 

We are proud of our team’s professional and reliable,  we treat our customer’s car as our own.

Our Costumer Say

Really great experience. I have a very old car with lots of "quirks". The Quality Diagnostic folks took a look, sorted out what was wrong, explained what would be fixable, and what would be possible to just let go and live with without repairs. I appreciate that they gave me all my options and helped me make an informed choice without trying to convince me to put more money in repairs into my old reliable car than it's worth. They fixed up my breaks in record time and their prices are reasonable. Thumbs up!
Dana Asbury
I have been taking my car here since I had it. They do good work they get you in any tell you the problem in I love most they call you in tell you the price before they do anything as far as work on the car. This is major for me some places just take it upon there selves in do the work it might be thousands of dollars in if I’m paying out of pocket let me decide to say yes. They are very convenient I have never called in had to wait weeks to take my car in.
Sakisa Shelton

Diagnose and Repair

Let our team of experts get to the bottom of your auto troubles with an in-depth diagnosis. We will deliver the right repair to make sure you're back on the road fast. Contact us today.