Check Engine Light & Diagnostics in Tallmadge, OH
Check engine light just came on? Don’t panic—but don’t ignore it either.
That little orange light could mean anything from a loose gas cap to a major engine issue. The key is not guessing. At Greer’s Auto Repair, we combine advanced diagnostic tools with hands-on know-how to figure out exactly what’s going on—and fix it the right way.
What Triggers the Check Engine Light?
Common culprits include:
- Faulty oxygen or mass airflow sensors
- Loose or missing gas cap
- Ignition coil or spark plug issues
- Catalytic converter problems
- Transmission or fuel system faults
- Emissions system failures
You won’t know which it is until it’s scanned—and even then, those codes don’t tell the whole story. That’s where real-world experience comes in.
What We Do at Greer’s

Run a full system scan using professional-grade tools (not just a parts store reader)

Interpret the codes correctly—no guessing, no unnecessary repairs

Test and inspect the actual components involved

Explain everything in plain English before we do a thing
Why Tallmadge Drivers Trust Our Diagnostics
- No BS. We’ll tell you exactly what’s wrong, what’s urgent, and what can wait.
- Solid diagnostic process—no random part swaps or “maybe it’s this”
- Skilled techs who work on everything from late-model imports to older domestic rides
- Fast turnaround—usually same day for diagnostics
Let’s Take the Guesswork Out of It
Don’t waste time worrying—or worse, ignoring the problem. Stop by Greer’s at 17 East Ave, Tallmadge or call (234) 813-1415 and we’ll get to the bottom of it.
Diagnostics & Check Engine Light FAQ
Sometimes. If it’s steady, it may not be urgent—but still needs checking soon. If it’s flashing, stop driving and get it checked right away.
Yes. We test components and confirm the failure before recommending a repair.
Code readers give general info. We go deeper with professional tools and actual testing to find the root cause.
It depends on the issue, but we’ll always give you a price upfront. And if you have us do the repair, we often apply that cost toward the fix.
We only reset it after we’ve fixed the issue—otherwise it’ll just come back on.
What Our Customers Say About Us
EXCELLENT Based on 29 reviews Posted on shane carperTrustindex verifies that the original source of the review is Google. Posted on Gale GaultTrustindex verifies that the original source of the review is Google. First time customer from Tallmadge,Ohio. Found Greers Auto Repair to be most professional, thorough, friendly, fair, and honest and trustworthy. Expert diagnosis and repairs, on time at a fair price. Recommend Ryan Greer and his team without reservation, in this day and age, that means something.Posted on Deby BretzTrustindex verifies that the original source of the review is Google. Ryan is a great guy to do business with. He knows his stuff and has completed several repairs for us. Very knowledgable. Trustworthy. Kudos to the team as well!Posted on Brittany RiansTrustindex verifies that the original source of the review is Google. Ryan was able to get my vehicle in last-minute for service to repair an issue that another mechanic caused! He was fair with pricing and had a quick turnaround time. He really saved me from a mess! I will be a returning customer. Thank you!Posted on JeffreyTrustindex verifies that the original source of the review is Google. Ryan and the guys at Greer's are fantastic. They replaced the timing chain on our 68 AMX. It absolutely rocks now. I'm taking fast and furious. They went out of the way to take great care of our baby. If you have a classic car that needs attention. You would be foolish not to use Greer's. Thanks again guys.Posted on Becca LynnTrustindex verifies that the original source of the review is Google. Thank you Ryan and team of certified technicians! Upfront pricing honest, knowledgeable, friendly and timely repairs! With the all the vehicles ready to be serviced, I knew that was a positive sign I finally found a professional auto shop !Posted on Mark RosatiTrustindex verifies that the original source of the review is Google. Great bunch of guys, all very knowledgeablePosted on Frances Bovard (Feralfranny)Trustindex verifies that the original source of the review is Google. Thank you to these amazing men, you guys are awesome. My cars ball joint decided to give up and cause me to crash. These wonderful men took the time to explain the issues of my car and help me right away. Great people and honest prices. They are gentlemen.Posted on Joseph StinauerTrustindex verifies that the original source of the review is Google. Fuel pump replacement on vehicle, awesome job, Ryan very respectful and knowledgeable. Thanks!Posted on Melanie MatweyouTrustindex verifies that the original source of the review is Google.