Engine Diagnostics & Check Engine Light Service in Sugarcreek, OH
A glowing dashboard light can turn any drive into a stressful one. At Sun Valley Auto Repair in Sugarcreek, OH, we make diagnosing engine problems simple, clear, and confident — so you understand exactly what your vehicle needs and why.
Whether the Check Engine Light just came on or your engine isn’t running like it used to, our ASE-certified technicians are here to help.
Why Diagnostics Matter
Modern vehicles rely on sensors, computers, and complex systems — and when something goes wrong, that light is your first warning.
With professional diagnostics, we can:
- Pinpoint the exact cause of the issue
- Prevent further engine damage
- Save money by fixing the right thing the first time
- Reset warning lights properly
Guessing is expensive. Diagnostics provide answers.
What’s Included in a Diagnostic Service
Every diagnostic service at Sun Valley includes:
- ✔️ Computer scan for problem codes
- ✔️ Verification testing (not just reading a code)
- ✔️ Digital inspection with photos & notes
- ✔️ Clear estimate before any repairs
- ✔️ 3-Year / 36,000-Mile Nationwide Warranty on qualifying repairs
We’ll never replace a part just because a code says to — we confirm the true cause before recommending any fixes.
What You Can Expect: Our 4-Step Diagnostic Process
This visual roadmap helps you know exactly what will happen:
- Scan — We connect professional diagnostic tools to read system codes.
- Test — We inspect and test the component causing the alert — no guesswork.
- Show — You receive a digital report with photos, videos, and our findings.
- Decide — You choose the next step with full clarity — no pressure, no surprises.
You stay informed from start to finish.
Signs You Need Engine Diagnostics
Schedule a Diagnostic if you notice:
- Check Engine Light is on or flashing
- Rough idling or shaking
- Hesitation when accelerating
- Hard starts, stalling, or low power
- Poor fuel mileage
- Strange smells (burning or fuel odors)
If that light is flashing, do not wait — that signals an active engine misfire and can cause severe damage.
Common Issues We Find & Fix
We diagnose problems with:
- Ignition coils & spark plugs
- Oxygen & temperature sensors
- Mass Air Flow (MAF) sensors
- Fuel injectors & fuel pumps
- Evaporative emission systems (EVAP leaks)
- Battery & charging system faults
- Engine timing issues
Whatever the issue — we’ll uncover the root cause.
Honest Guidance Before Any Repair
There’s no guesswork here.
You’ll always see what we see through our digital vehicle inspection — with photos, videos, and straightforward explanations right to your phone.
You approve what gets fixed, when it gets fixed.
Schedule My Diagnostic
Clear answers. Smart decisions. Peace of mind.
Call 330-473-7292, stop by, or Schedule My Diagnostic online 24/7.
📍 2450 Township Road 406, Sugarcreek, OH
Engine Diagnostics FAQ
How long does a diagnostic take?
Most diagnostic services take 45–90 minutes, depending on the issue.
Can you turn the light off?
If the cause is fixed, yes — otherwise, simply resetting the light will not solve the problem, and it will return.
My light is flashing — what does that mean?
That indicates an active misfire causing potential engine damage. It should be addressed immediately.
Does a code tell you exactly what to replace?
No — codes point to a system or area, not the specific failed part. We test to find the true cause.
Do diagnostics qualify for your warranty?
Our 3-year/36,000-mile nationwide warranty applies to qualifying repairs identified during diagnostics.
The light went off — should I still come in?
Yes — an intermittent issue can return and become more serious. We’ll check stored history codes.
Your road is our promise — and that starts with answers you can trust.