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.
Clear answers. Smart decisions. Peace of mind.
Call 330-473-7292, stop by, or book 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.