Where is A&D Auto Repair located and what areas do you serve?

A&D Auto Repair is located at 8040 Old M-78, Haslett, MI 48840, serving drivers in Haslett, East Lansing, Okemos, Bath, Perry, Williamston, and Greater Lansing. Call (517) 339-6007.

What warranty does A&D Auto Repair provide on repairs?

A&D Auto Repair backs qualifying repairs with a 3-Year / 36,000-Mile Nationwide Warranty, plus digital vehicle inspections so you can see photos of your vehicle before approving any work.

Do you offer free loaner cars in Haslett and East Lansing?

Yes. Complimentary loaner vehicles and local shuttle or pickup/drop-off service are available for customers in Haslett, East Lansing, and Okemos while your vehicle is being serviced.

Does A&D Auto Repair work on diesel trucks and commercial fleets?

Yes. We service light-duty and medium-duty diesel trucks (Ford Powerstroke, GM Duramax, Ram Cummins) as well as passenger and commercial fleet vehicles across Mid-Michigan.

Check Engine Light Lansing MI | A&D Repair Haslett

Your check engine light just came on, and you’re wondering what it means and how much it’s going to cost to fix. The truth is, that light could mean anything from a loose gas cap to a serious engine problem—and the only way to know for sure is to plug in a diagnostic scanner and read the code. That’s exactly what we do at A&D Repair here in Haslett, and we’ll give you straight answers about what needs to happen next.

What Does Your Check Engine Light Actually Mean?

Your vehicle’s onboard diagnostic system is constantly monitoring engine performance, emissions, and transmission function. When something falls outside normal parameters, the system triggers that check engine light on your dashboard. It’s not always an emergency—sometimes it really is just a loose gas cap—but you shouldn’t ignore it either. Driving around with the light on means you’re flying blind. You won’t know if it’s a minor sensor issue or something that could damage your engine if left unchecked.

The only way to find out what’s actually wrong is through engine diagnostics. We use professional-grade diagnostic equipment to pull the trouble code from your vehicle’s computer and tell you exactly what’s triggering the light.

Why You Need Professional Diagnostics, Not Guesswork

Some shops will charge you for parts and labor based on a guess. We don’t work that way. When you bring your vehicle to A&D Repair, we connect your car to our diagnostic scanner, read the fault code, and explain what it means in plain language. From there, we can tell you whether it’s something simple we can handle on the spot or something that needs more in-depth work.

Common reasons for check engine lights include:

A faulty oxygen sensor
Loose or damaged gas cap
Catalytic converter issues
Bad spark plugs or ignition coils
Mass airflow sensor problems
Transmission concerns

Some of these are quick fixes. Others require more attention. Either way, you deserve to know what you’re dealing with before you authorize any work.

What Happens During an Engine Diagnostic at A&D Repair

Here’s our process: You drive in, tell us the light came on (and when, if you remember). We hook up our diagnostic equipment, run a full scan, and pull the trouble code. Then we sit down with you and explain what the code means, what we think is causing it, and what your options are. We don’t pressure you into repairs you don’t need. We just give you the facts so you can make an informed decision about your vehicle.

If the fix is straightforward—like replacing a sensor or spark plug—we can often take care of it the same day. If it’s something more complex, we’ll let you know upfront what the timeline and cost will look like.

Don’t Wait—Get It Checked

Driving around with your check engine light on is risky. You could be burning extra fuel, damaging your catalytic converter, or letting a small problem turn into an expensive one. The sooner you get it diagnosed, the sooner you’ll know what you’re dealing with and can make a plan to fix it.

FAQ: Check Engine Light Questions

Is It Safe to Drive with the Check Engine Light On?

It depends on the code. If your car is running fine and the light just came on, it’s usually safe to drive to a repair shop. But if you notice rough idling, loss of power, or strange noises, get it looked at right away. Don’t ignore it for weeks—get it diagnosed so you know what’s really going on.

How Much Does Engine Diagnostics Cost?

We charge a fair diagnostic fee to pull and interpret your trouble code. That fee is always worth it because you’ll know exactly what’s wrong before you authorize any repairs. Many shops will apply that diagnostic fee toward repair costs if you choose to have the work done with us.

Can I Clear the Check Engine Light Myself?

You can buy a code reader online and clear the light yourself, but that just makes the light go away—it doesn’t fix the problem. The light will come back if the underlying issue isn’t addressed. We recommend getting it diagnosed first so you know what you’re actually dealing with.

Bring Your Vehicle to A&D Repair

If your check engine light is on and you’re in the Haslett or greater Lansing area, stop by A&D Repair. We’ll run a full engine diagnostic, explain what we find, and give you honest advice about your next steps. No guesswork. No unnecessary upsells. Just straight talk about your vehicle and what it needs.

Ready to get your check engine light figured out? Contact A&D Repair today to schedule your diagnostic appointment.

Learn more about our ASE-certified auto repair services in Haslett, check our 3-Year / 36,000-Mile Nationwide Warranty and free loaner vehicles, or schedule your diagnostic appointment online at 8040 Old M-78, Haslett, MI 48840 ((517) 339-6007) — a proud member of 517 Auto Care.