Check Engine Light Diagnostics

Accurate Check Engine Light Diagnostics & Repair in Millersport, OH

When your check engine light comes on, it’s your vehicle’s way of saying, “Something’s not right.” At Kreager Tire and Service in Millersport, OH, we take that seriously. Whether it’s a glowing light or a flashing one, we’ll get to the root of the issue quickly and accurately. Our check engine light diagnostics are performed using dealer-level tools, giving you answers you can trust and repairs you can rely on.

What Your Check Engine Light Is Trying to Tell You

Your check engine light is part of your vehicle’s onboard diagnostics system (OBD-II). When it detects a problem, it turns on to warn you. But not all warning lights are the same:

Solid Check Engine Light: This usually means a non-urgent issue, but it should still be checked soon.
Flashing Check Engine Light: This often indicates a serious problem like an engine misfire or catalytic converter damage and needs immediate attention.

Ignoring either one can lead to more costly repairs or long-term damage. That’s why our team is here to help with fast, accurate check engine light diagnostics and repairs.

Other Dashboard Warning Lights to Watch

Your dashboard has more to say than just “Check Engine.” If you notice any of the following lights, they may be related, or point to additional issues:

Battery/Charging System Light
ABS (Anti-lock Brake System) Light
Oil Pressure Light

TPMS (Tire Pressure Monitoring System) Light
Coolant Temperature Warning Light

If any warning light comes on, especially alongside a check engine light, bring your vehicle in so we can perform a complete diagnostic scan and evaluation.

Our Warranty

We offer a 3-year, 36,000-mile warranty on parts and labor. When we say we stand by our work, we mean it.

We’re No LongerJust Tires

Code Scan Isn’t Enough—You Need a Full Diagnostic

Free scans from auto parts stores can point you in a general direction, but they rarely tell the full story. We often see customers come in with codes like P0300 (random misfire) or P0420 (catalyst efficiency), still unsure what’s actually wrong.

At Kreager Tire and Service, we take diagnostics further.

Advanced Check Engine Light Diagnostics

Using professional scan tools from Autel, Snap-On, as well as Pico Lab Scopes, we go beyond the basics to:

Read live data and freeze-frame info
Test sensors and circuits with precision
Run manufacturer-level diagnostic routines
Confirm the real cause before making repairs

We don’t guess, we diagnose with accuracy and confidence.

Complete Check Engine Light Repair Services

Once we’ve identified the issue, we’re equipped to handle everything needed to fix it. Some of the most common check engine light repair services we perform include:

Spark Plug & Ignition Coil Replacement

Worn spark plugs or coils often cause misfires. We replace them to restore smooth performance and prevent long-term engine issues.

Oxygen (O2) Sensor Replacement

Failing O2 sensors can affect fuel economy and emissions. We replace them to help your engine run cleaner and more efficiently.

Mass Airflow Sensor (MAF) Service

A faulty MAF sensor can cause sluggish performance. We clean or replace it to restore proper air-fuel balance.

Vacuum Leak Repair

Vacuum leaks affect idle and performance. We locate and seal these leaks to keep your engine running steady.

Fuel Injector Cleaning or Replacement

Clogged injectors cause misfires and poor fuel economy. We clean or replace them for consistent power and efficiency.

Catalytic Converter Diagnostics

If your converter is failing, you may see a code like P0420. We diagnose and determine whether repair or replacement is needed.

Engine Timing & Misfire Correction

Timing issues or misfires lead to rough idling and power loss. We correct the issue to prevent major engine damage.

Wiring & Connector Repairs

Electrical faults can trigger false warnings. We repair damaged wiring and connectors to restore accurate readings.

Check Engine Trouble? We’re Millersport’s Go-To

We’re not just another auto repair shop near you, we’re part of the community. Here’s what makes us different when it comes to check engine light diagnostics:

Trusted Tools, Proven Accuracy: We use top-tier equipment trusted by dealerships and high-performance technicians alike.
Clear Communication: We explain the issue in terms you’ll understand and never push repairs you don’t need.
Small-Town Service: Whether you’re local or visiting, we treat you like family, offering shuttle rides, home pick-up/drop-off, and honest support.
Backed by Warranty: Most repairs come with a 3-year, 36,000-mile warranty for your peace of mind.
Reputation Built Over Time: Since 1985, Kreager Tire and Service has been the go-to shop for drivers in Millersport and beyond.

Your Neighborhood Shop for Millersport and Beyond

Kreager Tire and Service welcomes drivers from all across the region—Millersport, Hebron, Thornville, Buckeye Lake, Heath, Newark, Lancaster, Pickerington, Glenford, Baltimore, Somerset, and Granville.

If you’re looking for quality care and dependable service, you’re in the right place.

Book An Appointment

Call Us At: 740-467-3189

Thoughtful Perks, Hometown Service

We understand that your time is valuable. That’s why we offer:

Your Dashboard’s Talking—Let’s Find Out What It’s Saying

If your check engine light is on or flashing, don’t ignore it. We’ll get to the bottom of it with the same care and precision we’ve built our name on.

At Kreager Tire and Service, we’re no longer just tires, we’re your trusted source for diagnostics you can count on.

Book An Appointment