Engine LightDiagnostics & Repair
Don't ignore that glowing warning light. Our certified technicians in St George, UT use advanced OBD-II scanning to pinpoint exactly what's wrong and fix it right — the first time.
What Your Engine Light Is Telling You
Modern vehicles monitor hundreds of parameters in real time. When something falls outside normal operating range, the engine control module triggers a warning light on your dashboard. At St George Auto Repair — a locally, family-owned shop with over 30 years of experience and 13 years serving customers at our Bluff Street location — we decode that signal quickly and accurately so you're back on the road without guesswork or unnecessary parts.
OBD-II Code Scanning
We connect professional-grade scan tools to your vehicle's on-board diagnostics port to retrieve every fault code — from minor sensor alerts to serious engine faults.
Live Data Analysis
Beyond fault codes, we analyze live sensor data — fuel trims, oxygen sensor readings, ignition timing — to find the root cause, not just the symptom.
Electrical & Sensor Repair
Many check-engine lights trace back to a faulty sensor or wiring issue. We test and replace MAF sensors, O2 sensors, throttle position sensors, and more.
Emissions & EVAP Testing
Failing an emissions test? Our EVAP system diagnostics identify leaks in fuel vapor systems so your vehicle passes Utah state inspections and runs cleanly.
Why St George Drivers Choose Us
When your check-engine light comes on, you need answers fast. As a locally, family-owned shop with over 30 years of experience — 13 of them right here on Bluff Street — here's what sets our engine-light service apart from the competition.
Same-Day Diagnostics
Most engine-light diagnoses are completed the same day. Drop off your vehicle in the morning and know what's wrong by afternoon.
Transparent, Written Estimates
We explain every fault code in plain English and provide a written estimate before any repair begins — no hidden fees, ever.
Certified Technicians
Our ASE-certified mechanics bring over 30 years of hands-on experience diagnosing everything from simple sensor faults to complex engine management issues — backed by a family-owned commitment to doing the job right.
Nationwide Warranty — 12 Mo / 12,000 Mi
Every repair we perform is backed by a nationwide 12-month or 12,000-mile warranty — parts and labor. If you need warranty service while away from home, simply call the 800 number on your receipt to facilitate a claim at any participating shop across the country.
Ford EcoBoost Specialists
EcoBoost-specific codes are our speciality. We have dedicated experience with the 2.0L, 2.3L, and 3.5L EcoBoost engine families.
Post-Repair Follow-Up
We clear codes and verify the repair with a road-test cycle before handing your keys back — and we're available if questions arise later.
Our Diagnostic Process
Refined over 30+ years as a locally, family-owned shop, our proven six-step process identifies and fixes engine-light issues accurately — every time.
Vehicle Check-In
Drop off your vehicle and speak with a service advisor about the warning lights, symptoms, and any recent changes you've noticed in performance.
OBD-II Code Retrieval
Our technician plugs a professional-grade scanner into your vehicle's diagnostic port and retrieves all stored, pending, and permanent fault codes.
Live-Data & Visual Inspection
We review live sensor data streams and perform a visual inspection of related components — wiring, hoses, connectors — to confirm the root cause.
Written Estimate & Approval
You receive a clear, itemized written estimate. We explain exactly what we found, what needs repair, and why — in plain language, not jargon.
Repair & Verification
Once approved, our certified technicians complete the repair using quality parts. We clear codes and run a full drive-cycle test to confirm the fix.
Vehicle Return & Follow-Up
We walk you through what was done, hand back your keys with confidence, and follow up to make sure you're happy with the result.
Frequently Asked Questions
Answers to the most common questions about check engine lights and diagnostic service in St George, UT. Don't see yours? Give us a call.
Still have questions? Call us at (435) 628-8880 or send us a message online.
Full-Service Auto Repair
From engine diagnostics to 4WD systems — backed by 30+ years of family-owned expertise and 13 years serving St George, UT from this very location.
Family-owned and locally operated — proudly serving St George, UT and the surrounding area for over 30 years.
Schedule AppointmentGet Your Engine Light Diagnosed Today
Don't let a warning light turn into a major repair. Bring your vehicle to St George Auto Repair — a locally, family-owned shop with over 30 years of experience and 13 years at this location — for same-day diagnostics, honest answers, and quality repairs.
776 South Bluff Street, St George, UT • Mon–Fri 8am–5pm