ADVANCED DIAGNOSTICS
Check engine light, warning lights, performance problems. We use advanced OBD-II scanners to find the exact cause — not guess at it.
Ignoring a check engine light can turn a $200 sensor repair into a $1,500 catalytic converter replacement. Early diagnosis costs far less than delayed damage.
Three shops told me I needed a new transmission. Nick's ran a full diagnostic and found a faulty sensor. $180 fix. That was two years ago — still fine.
— Rashad T.
WHAT DRIVERS
ASK US
Warning lights and performance issues can mean dozens of different things. These are the diagnostic questions we answer every day in our Cleveland shop.
SIGNS YOU NEED DIAGNOSTICS SERVICE
If you notice any of these, do not wait. Bring your vehicle in for an inspection.
Check engine light or service engine soon light on
Multiple warning lights illuminated at once
Engine running rough, misfiring, or stalling
Sudden drop in fuel economy
Vehicle hesitating or lacking power during acceleration
Strange smells from the engine bay or exhaust
Important: Ignoring a check engine light can turn a $200 sensor repair into a $1,500 catalytic converter replacement. Early diagnosis costs far less than delayed damage.
OUR DIAGNOSTICS PROCESS
Every repair follows a structured process. We diagnose first, explain what we find, and fix it right.
Code Scan
Read all diagnostic trouble codes stored in every vehicle module, not just the engine.
Live Data Analysis
Monitor real-time sensor readings to identify values that are out of normal range.
Component Testing
Test the specific suspected component to confirm it has actually failed before replacing it.
Root Cause Identification
Determine why the component failed to prevent the same problem from returning.
Clear & Verify
After repair, clear codes and verify the fix with a test drive and re-scan.
DIAGNOSTICS SERVICE
YOU CAN TRUST
Our Guarantee: We stand behind every repair with a warranty on parts and labor. If something is not right, we make it right.
We test before we replace. Our advanced OBD-II scanners and live data analysis pinpoint the exact failed component so you only pay for what you actually need. That approach has earned us the trust of Cleveland drivers.
Advanced OBD-II diagnostic scanners
We test before we replace — no parts guessing
Full system scan, not just engine codes
Live data analysis to catch intermittent problems
Clear explanation of what is wrong and what it costs to fix
Fair diagnostic fees that apply toward the repair
What Cleveland drivers say
Three shops told me I needed a new transmission. Nick's ran a full diagnostic and found a faulty sensor. $180 fix. That was two years ago — still fine.
My check engine light had been on for a month. I was scared to take it anywhere. They scanned it, explained the code in plain English, and I left same day.
The diagnostic fee gets applied toward repair if you proceed. I didn't feel like they were nickel-and-diming me. I felt like they were on my side.
PEOPLE ALSO ASK
Answers to the most common questions Cleveland drivers ask about diagnostics service.
Why is my check engine light on?
A check engine light indicates your vehicle's onboard computer has detected a problem with the engine, emissions, or drivetrain systems. Common causes include a loose gas cap, failing oxygen sensor, catalytic converter issue, or misfiring spark plugs. An OBD-II diagnostic scan reads the specific trouble code to identify the exact problem.
How much does a check engine light diagnosis cost in Cleveland?
A basic OBD-II code read is often free at parts stores, but a full diagnostic evaluation at a repair shop typically costs $80 to $150 in Cleveland. At Nick's Tire & Auto, our technicians go beyond reading codes — we use live data analysis to pinpoint the actual failed component so you only pay for the repair you need.
Can I drive with the check engine light on?
A steady check engine light usually means you can drive to a shop safely, but should have it diagnosed soon. A flashing check engine light indicates a severe misfire that can damage the catalytic converter. If the light is flashing, reduce speed and have the vehicle inspected immediately to prevent expensive secondary damage.
What is an OBD-II diagnostic scan?
OBD-II stands for On-Board Diagnostics, second generation. It is a standardized system in all vehicles made after 1996 that monitors engine performance and emissions. A diagnostic scan tool connects to the OBD-II port under the dashboard and reads trouble codes stored by the vehicle's computer, helping technicians identify the source of a problem.
SCHEDULE YOUR
DIAGNOSTICS SERVICE
Fill out the form and we will call you to confirm your appointment. Or call us directly — walk-ins are always welcome.
17625 Euclid Ave
Cleveland, OH 44112
Monday – Saturday: 8:00 AM – 6:00 PM
Sunday: 9:00 AM – 4:00 PM
Flexible Financing Available
4 options · No credit needed · Approved in seconds · Up to $7,500
What to expect at your visit
Arrive — walk-ins welcome
Drive in anytime Mon–Sat 8–6, Sun 9–4. No appointment needed for most services.
Quick intake — 5 minutes
Tell us what you're noticing. We write it down and ask a few questions. No jargon.
We call you with the full picture
Before any work starts we explain what we found, show photos if needed, and give you the exact price. You approve — then we begin.
Pick up — same day most repairs
Most jobs are ready same day. We text or call when it's done. Pay what was quoted.
OTHER SERVICES WE OFFER
Related Services
Looking for another service? We handle it all under one roof.
Emissions & E-Check
Ohio E-Check repair and testing. We fix the root cause so you pass the first time.
Learn moreBrake Repair
Pads, rotors, calipers, brake lines, ABS diagnostics. We show you the problem first.
Learn moreElectrical Repair
Wiring, sensors, modules, and electrical system diagnostics.
Learn moreGeneral Repair
Suspension, steering, exhaust, cooling systems, belts, hoses, and more.
Learn moreMore From Nick's Tire & Auto
AC & Heating Repair
AC diagnosis, recharge, compressor repair
Wheel Alignment
Precision alignment for tire life and handling
About Us
Cleveland's trusted shop since day one
All Areas Served
150+ locations across Northeast Ohio
Brake Repair
Pads, rotors, calipers, ABS diagnostics
Battery Service
Free testing, quality replacement with warranty
Belts & Hoses
Timing belt, serpentine belt replacement
Repair Tips Blog
Expert car care advice
Book Appointment
Online scheduling — walk-ins also welcome
Cooling System
Radiator, thermostat, water pump service
Contact & Booking
Schedule your appointment today
Car Care Guide
Seasonal maintenance tips